Time guide: adding hours & minutes (H:MM)

Time math breaks base-10 brains: 8:30 plus 1:45 is 10:15, not 9:75. This guide covers H:MM arithmetic for shifts and timesheets, decimal hours for payroll, overtime rules, and the productivity systems (Pomodoro, timeboxing, GTD) plus US work rules (FLSA, FMLA, at-will) that govern the hours. Because hours are money - and math errors compound weekly.

How to use the Time Calculator

Enter two H:MM times above.
Pick add or subtract.
Read H:MM plus decimal hours for pay.

Formula

Minutes = H×60 + M · back: H = minutes÷60 whole, M = remainder · decimal = min ÷ 60

Key concepts, explained

Hours/minutes math: base 60

Add minutes; every 60 carries - or let calculators handle it. Borrowing hours (60) on negative minutes.

Subtracting 45 min from 9:15 gives 8:30 - borrow hours like dollars.

Decimal hours: industry minutes

Payroll formats: 8:30 = 8.5h. Minutes divided by 60. Quarter-hours (0.25!) standard.

7.75 hours means 7:45 (0.75 × 60 = 45). Conversions both directions fluent.

Running Excel timesheets

=A1+B1 with [h]:mm formats - same math. Overnight shifts add 24:00 to end times.

Templates shared; totals audited weekly. Formulas locked, inputs validated.

Overtime law: 40h, time-and-half

FLSA: non-exempt overtime past 40 weekly at 1.5× - state daily rules (CA 8h!) checked. Misclassification rampant.

Exempt thresholds ($58,656+) verified yearly. Duties tests decide, titles do not.

Time tracking required since always

Employers must track non-exempt hours accurately; rounding only neutral. Auto-deductions illegal without proof.

Seven-minute rules (FLSA!) allow quarter-hour rounding if unbiased. Policies written.

Flexible schedules and core hours

Flextime with core coverage (10-3!) balances freedom and meetings. Salaried flexibility negotiated explicitly.

Remote compacts written (availability!). Core hours published.

Banking vs. paying overtime

Private-sector comp time generally illegal in lieu of OT pay - public employers excepted. Overtime paid, not banked.

TOIL policies where legal documented. Back-pay claims filed timely.

Night/weekend premiums

Differentials for nights/weekends - contract-specific. Holiday pay (time-and-half common!). Weekend rotations bargained.

Offer letters state premiums. Paystubs audited.

Shift-work premiums and health

Night differentials compensate health costs; rotating worst. Sleep hygiene critical (blackout!).

Seniority bids preferred shifts. Health screenings regular.

On-call pay

Engaged-to-wait (on-site!) paid fully; waiting-to-engage (pagers!) partially by state. Response-time tests decide.

Agreements specify rates. Callbacks minimum-paid (2h!).

Breaks: 30 per 6h, paid 15s

Federal law mandates no breaks(!); states vary (CA 30-min meal periods!). Paid 5-20 min rests common.

Missed-break penalties where mandated. Policies posted.

Rest between shifts

Clopening regulations emerging (predictive scheduling!); 8-10h minimums where legislated. Fatigue managed.

Split shifts consented. Schedules posted 14 days (fair-workweek!).

Sunday/premium-day rules

Blue laws mostly repealed; premium pay contractual now. Holiday premiums (1.5-2×!) negotiated.

Weekend warriors compensated. Calendars honored.

Part-time and bridge arrangements

Pro-rata benefits negotiated;return rights in writing. ACA 30h thresholds gate benefits.

Phased retirements bridge. Schedules fixed, not floating.

Side-gig hourly rates

Moonlighting policies checked (conflicts!); total hours watched; taxes paid quarterly. Competition avoided.

Employer IP assignments reviewed. Disclosure letters filed.

Reading paystubs correctly

Gross, pre-tax, taxes, post-tax, PTO balances verified each cycle. Errors reported within pay periods.

YTD totals reconciled with W-2s. Misclassification flagged.

PTO accrual: 2-4 weeks

Two-to-four weeks typical; unlimited often means fewer days - tracked and planned like entitlements. Accrual caps watched.

Use-or-lose forfeits December balances. Payouts at exit vary by state!

Sick notes: policies day one

Paid sick mandates spreading (accrual 1:30!); doctor notes by policy. Abuse tracked; legitimate use protected.

COVID rules evolved; handbooks current. HR notified same-day.

Paid leave 6 weeks + state top-ups

Short-term disability 6-8 weeks; state PFL adds (CA/NY/NJ+!). Job protection via FMLA (12 weeks!).

Top-ups stacked; PTO sequenced. Claims filed pre-birth.

Sick pay 60-70 percent

State disability pays fractions; employer top-ups bridge. Workers comp covers injuries (tax-free!).

Elimination periods waited. Doctors document thoroughly.

Remote work: no right, but...

At-will means remote revocable; written agreements protect. Tax nexus follows work states!

Equipment stipends negotiated. Performance measured by output.

Mobile work and business trips

Travel time counts fully/partially (policies!): logged, per-diems, A1 equivalents abroad. Bleisure declared.

Time zones tracked; overtime on travel paid.

Per-diem meals $59-79

GSA rates ($59-79/day!): receipts, foreign rates, meal deductions. Company cards reconciled.

Partial days prorated. Alcohol excluded mostly.

Mileage at 67 cents

IRS rates (proof!): mileage logs, higher actual costs documented. Commuting excluded (first/last!).

Employer reimbursements tax-free to rates. Apps automate logs.

Bonuses, commissions, 13th-month equivalents

Annual bonuses (10-20%!), sales commissions (quota-based!), holiday bonuses: taxed as supplemental (22%!). Target letters signed.

Clawbacks on early exits read. Payout dates calendared.

Overtime tax myths

No special exemption federally (proposals debated!): overtime taxed like wages. State proposals tracked.

Withholding spikes confuse; refunds reconcile. Legislation watched.

Year-end tax true-ups

W-4s recalibrated; bonuses timed; losses harvested. CPAs consulted November (not April!). Safe harbors met.

Estimates adjusted Q4. Brackets topped deliberately.

Deductible work costs

Employees: mostly nondeductible post-2017 (union dues excepted states!). Self-employed deduct fully (Schedule C!).

Home offices simplified ($5/sqft!). Receipts digitized.

Commuter benefits

Pre-tax transit/parking to $315/month: enrolled yearly. Biking $20/month (suspended federally!). Remote days adjust.

Benefits elected open enrollment. Commutes logged.

Home offices deducted

$1,500 simplified max (300 sqft!): employees ineligible; self-employed only. Exclusive-regular use photographed.

Actual methods itemized (utilities pro-rata!). Audits target this line.

Moving costs for jobs

Military only federally (civilian suspended!); employer reimbursements negotiated grossed-up. State deductions vary.

Receipts kept (movers, travel!). New-job distances logged.

Job-search costs deducted

Same-occupation searches deductible (resumes, travel!) - career changers excluded. Records kept.

Coaching fees capitalized. Interviews logged with outcomes.

Training costs: masters degrees

Work-related education deductible (maintains skills!); qualifying new trades excluded. Employer aid ($5,250 tax-free!).

Lifetime Learning Credits (20% to $2k!). Credentials ROI-weighed.

Time management: Pomodoro 25/5

Twenty-five on, five off; 6-8 quality beats 10 distracted. Interruptions batched.

Timers visible; phones silenced. Afternoon slumps walked.

Timeboxing calendars

Fixed boxes per task versus open lists. Estimates calibrated (×1.5 actual!). Overflows rescheduled, not stacked.

Buffers between meetings (travel!). Fridays flex.

Eisenhower: important/urgent

Hours attached: quadrant-2 blocks scheduled, rest batched - matrices without calendars fail. Weekly reviews sort.

Delegation quadrant-3; deletion quadrant-4. Saying no scripted.

GTD: capture everything

Inboxes emptied (2-min rule!); contexts (@calls, @desk!) batch; weekly reviews sacred. Tools (Todoist!) secondary.

Projects defined (next actions!). Someday lists pruned.

Eat the Frog mornings

Hardest first before email; willpower peaks AM. Frogs identified nightly. Afternoons batch shallow.

Rewards scheduled post-frog. Procrastination diagnosed (fear? boredom?).

2-minute rules

Sub-2-minutes immediately on processing - tracking costs more than doing. Inboxes zeroed daily.

Batched calls/emails/runs grouped (setup once per batch!). Contexts respected.

Parkinson: work expands

Deadlines compress (shorter boxes!); scope frozen at kickoff. Meetings defaulted 25 min.

Artificial urgency set (accountability!). Perfectionism time-boxed.

Pareto 80/20

Vital few drive results: clients, features, efforts ranked. Low-value pruned quarterly.

Time audits reveal 80s. Delegation follows analysis.

Deep Work (Cal Newport)

Ninety-minute blocks, notifications off, shutdown rituals complete. Depth scheduled daily.

Shallow batched afternoons. Metrics (papers shipped!) tracked.

Maker vs. manager (Paul Graham)

Deep creatives need half-days; coordinators hour-slots - mismatches destroy maker mornings totally. Office hours published.

Meeting-free days defended; manager days separated. Context costs named.

Ultradian 90-minute cycles

~90-min focus cycles with 20-min valleys. Work/rest aligned; breaks real (walks!).

Afternoon dips napped. Evenings protected.

Chronotypes: larks vs. owls

Genetics, not virtue: larks peak AM, owls PM. Schedules negotiated (core hours!). Teen owls accommodated.

Sleep debt repaid weekends partially. Light therapy shifts.

Sleep 7-9 hours for performance

Cognition degrades measurably under 7; athletes target 9. Screens off, rooms cool/dark.

Caffeine curfews (2pm!). Consistency beats duration variance.

Powernaps 20 minutes

Alarms set; grogginess avoided (30+ min!). Pre-shift naps energize. Caffeine naps stacked.

Dark quiet spaces found. Post-lunch timed.

Shutdown rituals: switching off

Reviews (3 wins!), tomorrow plans (3 MITs!), laptops shut, clothes changed, walks. Rumination parked.

Inboxes zeroed; tomorrow trusted. Evenings reclaimed.

Digital detox evenings

Screens off 1h before bed: books instead, phones in kitchens, notifications off. Sleep deepened.

Weekend mornings analog. Chargers centralized.

Hobbies: find time, take time

Trying (classes!), scheduling regularly, budgets - work not hobbies (boundaries!). Identity diversified.

Progress tracked; communities joined. Joy protected.

Volunteering: find meaningful

Food banks, fire departments, clubs: 2-4h/week, mileage deducted. Resumes enriched.

Boards joined later. Skills donated strategically.

Side gigs: permission

Approval (written!), total hours watched, taxed quarterly - competition avoided. IP assignments reviewed.

Employer moonlighting policies read. Conflicts disclosed.

Freelancing taxes: quarterly

Self-employment 15.3% plus income: quarterly estimates, SEP/Solo-401k shelters. CPAs early.

Invoices tracked; expenses separated. Safe harbors met.

Registering businesses: LLCs

Secretary of State, EIN questionnaires, licenses - business plans, insurance. S-elections modeled.

Operating agreements signed. Accounts separated day one.

At-will protection: 60-day WARN

Mass layoffs trigger 60-day notices (!): negotiations, severance 0.5-1mo/year, attorneys. Releases reviewed.

Discrimination claims filed timely (EEOC!). COBRA elected.

Severance: half-months per year

Rules of thumb 2-4 weeks/year: supplemental withholding, non-competes weighed. Negotiated (more!).

Outplacement used; references secured. Releases read line-by-line.

Separation agreements: waiting periods

Consideration periods (21/45 days!) plus revocation windows: attorneys review, compensation weighed. Older workers protected (OWBPA!).

Non-disparagement mutual. Benefits extended.

Unemployment: 26 weeks

Half-wages to caps: filed immediately, work searches documented, training approved. Appeals filed timely.

Severance offsets vary by state. Part-time earnings reported.

Waiting weeks: avoid gaps

Filing delays cost weeks - file day one or compensated. Requirements logged daily.

Identity verified upfront. Backpay claimed.

Job-search proof: records

Applications documented (portals!): appointments kept, sanctions avoided. Networking logged.

Work-search audits passed. Interviews tracked with outcomes.

Training: workforce grants

WIOA vouchers (agencies!): certified courses, travel covered, completion. Dislocated-worker priority.

Community colleges partnered. Credentials stacked.

Retirement contributions: verify

Statements yearly checked (credits!): gaps clarified, SSA advised (free!). Catch-ups at 50+.

Beneficiaries updated (divorce!). Allocations glided.

Employer 401(k) matches

Pre-tax plus matches: fund choices picked (target-dates!). Vesting cliffs noted.

Loans avoided; hardships last-resort. Fees audited.

HSA triple-tax wins

$4,150/$8,300 plus $1k catch-ups: deduct, grow, withdraw medical tax-free. Receipts saved decades.

Invested (not cash!). Medicare stops contributions.

Holiday pay: policies

Six-to-ten days typical: part-time pro-rata. Worked holidays premium (1.5-2×!). Calendars published.

Floating holidays picked. Blackout dates noted.

Holiday bonuses: timing, clawbacks

Annual 5-15%: active-status dates (!), clawbacks on early exits. Prorations negotiated.

Discretionary versus promised distinguished. Taxes withheld supplemental.

13th-month equivalents: annual bonuses

Contracts/bonuses (entitlements!): pro-rata, December dates, fully taxed. Offer letters state.

Guaranteed versus discretionary separated. Payouts calendared.

Sales commissions: quotas

Revenue tiers: statements audited, true-ups at termination, books inspected. Draws reconciled.

Quotas attainable (70%+ hit!). Accelerators modeled.

Sick kids: backup care

Backup sitters vetted; FMLA intermittently used; PTO coordinated. Employers informed early.

School nurses listed. Work-from-home negotiated.

Caregiver leave: 10 days + FMLA

State paid days plus federal 12 weeks (partial!): benefits (insurers!) reported promptly. Schedules flexed.

Eldercare resources located. Respite arranged.

Bereavement: 3-5 days

Policies (3-5 days!): recognized relations, documentation light, extensions unpaid. Grief counseling EAP.

Travel arranged; workloads covered.

PTO for moves/weddings

Policies/contracts (1-2 days!): moves, weddings, deaths - requested, documented. Unpaid supplements.

Calendars blocked early. Teams cross-trained.

Workers comp: report injuries

Doctors authorized, reported (employers + insurers!), documented. Retaliation illegal.

Second opinions allowed. Settlements attorney-reviewed.

Recognizing occupational disease

Lists (scheduled conditions!): reports, expert opinions, pensions, retraining (insurers pay!). Latency documented.

Exposures logged contemporaneously. Attorneys specialized.

Spotting boreout

Under-challenge (boredom!): demanded, trained, switched - not laziness. Stretch assignments requested.

Managers confronted with solutions. Side projects greenlit.

Understanding quiet quitting

Work-to-rule: signals understood, boundaries healthy, clarified or quit. Workloads audited.

Engagement surveyed; managers coached. Exits planned if needed.

Measuring work-life balance

Hours tracked (50+ critical!): energy balance, priorities, part-time options. Scores reviewed monthly.

Boundaries enforced; vacations taken fully.

Planning restorative vacations

Two-plus weeks needed (studies!): switched off, buffers after, coverage arranged. Unplugged truly.

Handoffs documented; emergencies defined narrowly.

Digital detox vacations

Vacation modes, alarm clocks over phones, emergency numbers - recovery deeper. Photos batched.

Re-entry days buffered. Teams briefed.

Hobbies and balance

Compensation fixed-scheduled (calendars!): budgets, groups, progress. Identities diversified.

Lessons prepaid (commitment!). Showcases enjoyed.

Volunteering again

Meaning + networks: time budgets, tax deductions, references. Causes aligned with values.

Leadership roles grown into. Hours logged for employers.

Registering side work

Licenses (written!), taxes, insurance, competition avoided. DBAs filed; EINs obtained.

Quarterly estimates paid. Retirement accounts opened.

Pro resumes (no photos!)

US resumes: no photos, one-two pages, metrics-led bullets. ATS keywords mirrored. References separate.

LinkedIn matched; PDFs sent. Discrimination avoided structurally.

LinkedIn profiles maintained

Headlines keyworded, photos professional, wins quantified, recommendations requested, posted monthly. Recruiters inbound.

Skills endorsed; featured sections built. Open-to-work toggled strategically.

Contracts reviewed by attorneys

Clauses checked (attorneys!): overtime, non-competes, notice - negotiated. Offer letters compared.

Non-competes narrowed (states ban!). Sign-on clawbacks read.

Fixed terms without cause

At-will default (either side!): contracts specify otherwise, chains negotiated. Severance pre-agreed.

End dates calendared; renewals initiated early.

Passing probation

Ninety days deliver: feedback sought, goals clarified, networks built. Wins documented weekly.

Managers aligned (expectations!). Risks flagged early.

Shutdown rituals (evenings)

Rituals (reviews, plans, laptops shut!): parked, switched off. Tomorrow trusted.

Commutes decompressed; workouts slotted. Evenings reclaimed.

Sunday weekly planning

Sundays: calendars reviewed, 3 goals, MITs distributed. Meal-prep paired.

Inboxes triaged; outfits laid. Weeks previewed calmly.

Daily MIT planning

Three MITs defined, times blocked, first done before noon. Frogs eaten early.

Evenings reviewed (wins!). Streaks tracked.

Email twice daily

Eleven and four checked (only!): 2-minute immediates, rest scheduled. Notifications off (focus!).

Inbox-zero evenings; filters rule. Unsubscribes ruthless.

Auditing meetings

Calendars exported (hours!). Costs computed (rates!). Bottom 20% cut (days won!). Declines scripted.

Agendas required; defaults 25 min. Async alternatives proposed.

Preventing burnout

Workload, control, rewards, community, fairness, values - mismatches diagnosed. Vacations taken fully.

Counseling EAP-used; workloads renegotiated. Exits planned if chronic.

PTO payouts at exit

Accrued vacation paid in many states (use-it-or-lose-it voided!); sick rarely. Policies reviewed pre-resignation.

Final checks timed; disputes filed with labor boards. Negotiated start dates preserve.

Applying for education leave

Employer tuition aid ($5,250 tax-free!) applied yearly; approvals pre-enrollment. Grades reimbursed.

Clawbacks on early exits read. Credentials stacked strategically.

Applying for special leaves

Bereavement, jury, voting, military leaves requested with documentation. Paid portions confirmed.

Return dates set; workloads covered. Rights posted in handbooks.

Writing applications

Roles analyzed (requirements!). Cover letters (1 page, examples!). CVs updated (wins!). Keywords mirrored.

Referrals sought (bonuses motivate!). Follow-ups timed.

Step-by-step walkthrough

Guide: weekly timesheets

Mon-Fri: 8:30, 8:15, 9:00, 7:45, 8:00.
Minutes: 510+495+540+465+480 = 2,490.
Total: 41:30 = 41.5 h. At $90/hr → $3,735.

Guide: freelancer monthly invoices

Daily-log sums: 132:45 billable.
Decimal: 132.75 h × $90 = $11,947.50.
Round per contracts (nearest 6 min?), attach log summaries.

Guide: night-shift months

Base 160 h × $25 = $4,000.
Night premiums 40 h × $3 = $120.
Overtime 12 h × $37.50 = $450. Total $4,570 - audit paystubs.

Guide: overtime weeks

Contract 40:00, worked 8:30×5 + 4:00 Sat = 46:30.
Overtime: 6:30 at 1.5× = 9.75 equivalent hours.
Pay: 40 + 9.75 = 49.75 h × rate.

Guide: setting rates

Target $90k: ÷1,000 billable h = $90.
Load 30 percent taxes/benefits → $117.
At 70 percent utilization → $167/h floor. Quote $175.

Guide: Pomodoro days

List 3 MITs (most important tasks).
Assign Pomodoros (2/3/1).
Work 6 tomatoes; admin in gaps. Often done by 3pm.

Guide: killing meetings

Price them: 8 × $75/hr × 0.5 h × 50/yr = $15,000/yr.
Propose async trial months with decision logs.
Keep only meetings beating price tags.

Guide: yearly commute costs

One-way distance (14 mi!), workdays (220!).
Yearly miles: 6,160. Time: 0:35 × 2 × 220 = 257 h.
Costs: fuel + 257 h × half rates. Price moves/remote!

Guide: shutdown routines

Review (3 wins of the day!).
Tomorrow plans (3 MITs!).
Laptops shut, clothes changed, walks.

Guide: Sunday weekly planning

Review calendars (appointments!).
Set 3 weekly goals.
Distribute MITs per day.

Guide: daily MIT planning

Define 3 most important tasks.
Block times (calendars!).
Finish first before noon.

Guide: email twice daily

Check 11am and 4pm (only!).
2-minute immediates, rest scheduled.
Notifications off (focus!).

Guide: meeting audits

Export calendars (hours!).
Compute costs (rates!).
Cut bottom 20% (win days!).

Guide: writing applications

Analyze roles (requirements!).
Cover letters (1 page, examples!).
Update CVs (wins!).

Worked examples

Question	Answer
8:30 + 1:45	10:15
40:00 − 6:30	33:30
7:45 + 7:45	15:30
2:50 × 3 (3 episodes)	8:30
132:45 at $90/hr	$11,947.50
2,080 hr year − 80 vacation	2,000 billable max
160 hr + 12 hr OT at $25	$4,450 with 1.5× OT
4×10 weekly schedules	40:00 in four days
Lunch 12:00-12:45 daily × 5	3:45 unpaid/week
Commutes 0:35 × 2 × 220 days	≈257 hr/year

Complete reference tables

Time conversion matrix

Value	min	h
1 min	1	0.016667
5 min	5	0.083333
15 min	15	0.25
30 min	30	0.5
60 min	60	1
90 min	90	1.5
120 min	120	2
240 min	240	4
480 min	480	8
600 min	600	10

1 min equals 0.016667 h at the far end of the scale.

Shift end times

Start	+4:00	+6:00	+7:30	+8:00	+8:30	+10:00	+12:00
06:00	10:00	12:00	13:30	14:00	14:30	16:00	18:00
07:00	11:00	13:00	14:30	15:00	15:30	17:00	19:00
08:00	12:00	14:00	15:30	16:00	16:30	18:00	20:00
09:00	13:00	15:00	16:30	17:00	17:30	19:00	21:00
12:00	16:00	18:00	19:30	20:00	20:30	22:00	24:00
14:00	18:00	20:00	21:30	22:00	22:30	24:00	26:00
18:00	22:00	24:00	25:30	26:00	26:30	28:00	30:00
22:00	26:00	28:00	29:30	30:00	30:30	32:00	34:00

Shift end times

Start	+4:00	+6:00	+7:30	+8:00	+8:30	+10:00	+12:00
06:00	10:00	12:00	13:30	14:00	14:30	16:00	18:00
07:00	11:00	13:00	14:30	15:00	15:30	17:00	19:00
08:00	12:00	14:00	15:30	16:00	16:30	18:00	20:00
09:00	13:00	15:00	16:30	17:00	17:30	19:00	21:00
12:00	16:00	18:00	19:30	20:00	20:30	22:00	24:00
14:00	18:00	20:00	21:30	22:00	22:30	24:00	26:00
18:00	22:00	24:00	25:30	26:00	26:30	28:00	30:00
22:00	26:00	28:00	29:30	30:00	30:30	32:00	34:00

Shift end times

Start	+3:30	+5:00	+5:30	+7:00	+9:15	+11:30
05:00	8:30	10:00	10:30	12:00	14:15	16:30
06:30	10:00	11:30	12:00	13:30	15:45	18:00
07:30	11:00	12:30	13:00	14:30	16:45	19:00
10:00	13:30	15:00	15:30	17:00	19:15	21:30
11:00	14:30	16:00	16:30	18:00	20:15	22:30
13:00	16:30	18:00	18:30	20:00	22:15	24:30
15:00	18:30	20:00	20:30	22:00	24:15	26:30
16:30	20:00	21:30	22:00	23:30	25:45	28:00
19:00	22:30	24:00	24:30	26:00	28:15	30:30
20:00	23:30	25:00	25:30	27:00	29:15	31:30
21:00	24:30	26:00	26:30	28:00	30:15	32:30
23:00	26:30	28:00	28:30	30:00	32:15	34:30

Minutes → decimal hours (pay)

H:MM	Decimal
0:15	0.25
0:30	0.50
0:45	0.75
1:00	1.00
2:30	2.50
7:45	7.75
8:30	8.50

Common mistakes to avoid

Adding minutes past 60 without carrying. Base-60 arithmetic respected.
Rounding per day instead of weekly totals (wage theft or gifts!). Policies followed.
Forgetting unpaid breaks in shift totals. Meal periods deducted correctly.
AM/PM flips on 12-h inputs - prefer 24-h. Midnight/noon disambiguated.

Pro tips

Track in minutes, report in H:MM + decimals. Conversions automated.
Round per pay policies (often 15-min), not days. Neutral rules only.
Overnight: add 24:00 to end times. Date lines handled.
Phone stopwatches + calculators = instant timesheets. Apps replace both.

Where you will use this

Payroll

Hours × rates need decimals - tables bridge. Overtime computed correctly.

Project tracking

Task stages summed into honest estimates over time. Velocity calibrated.

Cooking and media

Episode runtimes, marinade windows, travel legs. Timers set reliably.

Overtime claims

Exact logs win disputes. Records exported. Back-pay recovered.

Client invoices

Decimal hours straight into invoices. Rounding disclosed. Trust built.

Glossary

H:MM	Hours:minutes format. Base-60 arithmetic applies.
Decimal hours	Payroll format (8.5 = 8:30). Minutes divided by 60.
Timesheets	Work-time evidence. Signed and archived.

Frequently asked questions

Add hours and minutes?

Add minutes; every 60 carries - or let calculators handle it. Base-60 respected.

Decimal hours?

Payroll formats: 8:30 = 8.5 h. Minutes divided by 60. Tables bridge.

Night shifts past midnight?

Add 24:00 (22:00 → 30:00 for 6:00 ends). Date lines handled.

Tables instead of calculators?

Works: =A1+B1 with [h]:mm formats - same math. Templates shared.

Subtract 45 min from 9:15?

8:30 - borrow hours (60) on negative minutes. Borrowing practiced.

7.75 hours in H:MM?

7:45 (0.75 × 60 = 45). Conversions both directions.

Employer rounding?

US: mostly exact-time required; rounding only neutral. Policies written.

Track billable vs. real?

Log both - ratios are realization rates (80%+ targets!). Gaps analyzed.

100 minutes in hours?

1:40 (1.67 h). Divisions practiced.

Log admin?

Yes - invisible visibility protects rates and roles. Overheads priced.

Shift premiums?

Premiums for nights/weekends - contract-specific. Offer letters state.

Unlimited PTO tricks?

Often fewer days - track and plan like entitlements. Caps watched.

Overtime salary thresholds?

FLSA plus state rules checked - current regulations verified. Duties tests decide.

Realization rates?

Collected ÷ worked - 80%+ healthy. Write-offs minimized.

4x10 better than 5x8?

Same pay mostly; 4×10 trades daily fatigue for long weekends. Trials run.

Meeting costs?

Attendees × fully-loaded hourly rates × duration - displayed live. Declines scripted.

Timeboxing?

Fixed boxes per task versus open lists. Estimates calibrated.

Ultradian rhythms?

~90-min focus cycles with 20-min valleys. Breaks real.

Standups worth it?

Often no - price them; async updates usually win. Agendas required.

Desktop tracking?

Manual start/stop per task - accurate but admin-heavy versus automatic. Needs matched.

DST paydays?

23/25-hour days need explicit rules - planned versus actual checked. Policies written.

Good utilization?

60-80 percent billable healthy; over 85 burns out. Hiring triggered.

Set consulting rates?

Targets ÷ hours × 1.3 burden ÷ 0.7 utilization. Floors enforced.

Auto-trackers accurate?

Activity ≠ billable - curate before invoicing. Rules tuned.

Toggl Harvest Clockify?

Toggl UX, Harvest invoices, Clockify value - picked by needs. Trials run.

Pomodoros per day?

6-8 quality beats 10 distracted. Timers visible. Afternoons batched shallow.

Maker-manager schedules?

Deep creatives need half-days; coordinators hour-slots - mismatches destroy maker mornings totally. Days separated.

Audit 168 hours?

Quarter-hour blocks two weeks logged, alignment 1-5 scored, high-hours-low-score attacked first. Reviews monthly.

Commutes worth it?

Hours at half pay plus miles priced: most commutes cost five figures yearly before health. Moves modeled.

Protect maker time?

Publish office hours, batch questions, defend meeting-free days, separate manager days. Calendars guarded.

Reclaimed hours killers?

Lifestyle creep fills within months - re-audit quarterly, calendar focus blocks first. Drift watched.

Remote vs. office deep work?

Remote protects maker blocks; offices serve coordination - hybrid anchor days split deliberately. Intentions set.

Refocus after interruptions?

About twenty minutes per switch - batched questions beat scattered ones weekly. Notifications silenced.

2-minute rules?

Sub-2-minutes immediately on processing - tracking costs more than doing. Inboxes zeroed.

Use Eisenhower?

Attach hours: quadrant-2 blocks scheduled, rest batched - matrices without calendars fail. Delegation practiced.

Say no at work?

Scripted positive-nos with alternatives plus visible workload math - twice awkward, then armor. Boundaries held.

What to batch?

Mail, errands, calls, admin - grouped by context (setup once per batch!). Contexts respected.

Distributed-team meetings?

Protect overlap hours for decisions, rest async - rotate midnight pain. Fairness tracked.

Freelance underpriced?

Divide income by ALL hours including admin - quotes must cover real rates, not billed ones. Floors raised.

Calendar bankruptcy when?

Overloaded months: cut non-contractual, hold revenue + health, rebook deliberately. Triage ruthless.

5am mornings required?

No - consistent wake-ups plus intentional first hours beat dawn heroics for every chronotype. Sleep protected.

Endless queues why?

Empty, uncertain, unfair stretches perception - busy, informed, serpentine fixes. Snacks offered.

Fund sabbaticals?

Monthly burn times months plus buffers - negotiate unpaid leave before quitting for role/insurance. Savings split.

Time affluence?

Free hours predict happiness after security - buy time, donate it, defend blank space. Audits yearly.

Do-not-disturb rude?

No with communicated tiers and tight emergency channels - halves monthly interruptions. Statuses set.

Batch or prioritize daily?

Batch by context in priority bands - setup costs dominate small stuff anyway. MITs first.

Track time as employees?

Ninety days honest logs show effective rates and meeting taxes raises never itemize. Reviews leveraged.

Commuter tax benefits?

Pre-tax transit/parking to monthly caps (enrolled!): commutes logged. Remote days adjust.

Shutdown rituals?

Reviews (3 wins!), tomorrow plans (3 MITs!), laptops shut, clothes changed, walks - parked, switched off.

Digital detox evenings?

Screens off 1h before bed: books instead, phones in kitchens, notifications off. Sleep deepened.

Find hobbies?

Try (classes!), schedule regularly, budgets - work not hobbies (boundaries!). Joy protected.

Volunteering?

Food banks, fire departments, clubs: 2-4h/week, mileage deducted. Boards joined later.

Side gigs?

Approval (written!), total hours watched, taxed quarterly - competition avoided. Disclosures filed.

Freelancing taxes?

Self-employment 15.3% plus income: quarterly estimates, SEP/Solo-401k shelters. CPAs early.

States, EINs, licenses - business plans, insurance. S-elections modeled. Accounts separated.

At-will protections?

WARN 60-day notices (!): negotiations, severance, attorneys. EEOC deadlines met.

Severance?

Rules of thumb 2-4 weeks/year: supplemental withholding, non-competes weighed. Negotiated up.

Separation agreements?

Consideration periods (21/45 days!) plus revocation windows: attorneys review, compensation weighed. OWBPA noted.

Unemployment?

Half-wages to caps: filed immediately, work searches documented, training approved. Appeals timely.

Waiting weeks?

Filing delays cost weeks - file day one or compensated. Identity verified upfront.

Job-search proof?

Applications documented (portals!): appointments kept, sanctions avoided. Outcomes tracked.

Workforce training?

WIOA vouchers (agencies!): certified courses, travel covered, completion. Priority groups served.

Retirement contributions?

Statements yearly checked (credits!): gaps clarified, SSA advised (free!). Beneficiaries updated.

Employer 401(k)?

Pre-tax plus matches: fund choices picked (target-dates!). Vesting cliffs noted. Fees audited.

HSA wins?

$4,150/$8,300 plus $1k catch-ups: deduct, grow, withdraw medical tax-free. Receipts saved decades.

Holiday pay?

Six-to-ten days typical: part-time pro-rata. Worked holidays premium (1.5-2×!). Calendars published.

Holiday bonuses?

Annual 5-15%: active-status dates (!), clawbacks on early exits. Prorations negotiated.

13th-month equivalents?

Contracts/bonuses (entitlements!): pro-rata, December dates, fully taxed. Letters state.

Sales commissions?

Revenue tiers: statements audited, true-ups at termination, books inspected. Quotas attainable.

Sick kids?

Backup sitters vetted; FMLA intermittently used; PTO coordinated. Schools listed.

Caregiver leave?

State paid days plus federal 12 weeks (partial!): benefits reported promptly. Schedules flexed.

Bereavement?

Policies (3-5 days!): recognized relations, documentation light, extensions unpaid. EAP counseling.

PTO for moves/weddings?

Policies/contracts (1-2 days!): moves, weddings, deaths - requested, documented. Calendars blocked.

Workers comp?

Doctors authorized, reported (employers + insurers!), documented. Retaliation illegal. Attorneys consulted.

Occupational disease?

Scheduled conditions: reports, expert opinions, pensions, retraining (insurers pay!). Exposures logged.

Boreout?

Under-challenge (boredom!): demanded, trained, switched - not laziness. Stretch requested.

Quiet quitting?

Work-to-rule: signals understood, boundaries healthy, clarified or quit. Engagement surveyed.

Measure work-life?

Hours tracked (50+ critical!): energy balance, priorities, part-time options. Scores monthly.

Restorative vacations?

Two-plus weeks needed (studies!): switched off, buffers after, coverage arranged. Unplugged truly.

Digital detox?

Vacation modes, alarm clocks over phones, emergency numbers - recovery deeper. Re-entry buffered.

Hobbies?

Compensation fixed-scheduled (calendars!): budgets, groups, progress. Lessons prepaid.

Volunteering again?

Meaning + networks: time budgets, tax deductions, references. Causes aligned.

Licenses (written!), taxes, insurance, competition avoided. EINs obtained. Estimates paid.

Pro resumes?

US resumes: no photos, one-two pages, metrics-led bullets. ATS keywords mirrored. PDFs sent.

LinkedIn?

Headlines keyworded, photos professional, wins quantified, recommendations requested, posted monthly. Recruiters inbound.

Contracts reviewed?

Clauses checked (attorneys!): overtime, non-competes, notice - negotiated. Sign-ons read.

Fixed terms?

At-will default (either side!): contracts specify otherwise, chains negotiated. End dates calendared.

Pass probation?

Ninety days deliver: feedback sought, goals clarified, networks built. Wins documented.

Shutdown rituals (evenings)?

Rituals (reviews, plans, laptops shut!): parked, switched off. Tomorrow trusted. Commutes decompressed.

Sunday planning?

Sundays: calendars reviewed, 3 goals, MITs distributed. Meal-prep paired. Inboxes triaged.

Daily MITs?

Three MITs defined, times blocked, first done before noon. Frogs eaten. Streaks tracked.

Email?

Eleven and four checked (only!): 2-minute immediates, rest scheduled. Notifications off. Filters rule.

Meetings?

Costs computed, async tested, bottom 20% cut. Agendas required. Defaults 25 minutes.

Applications?

Roles analyzed, 1-page letters, CV wins. Keywords mirrored. Referrals sought. Follow-ups timed.

Onboarding?

100 days: learned, networked, quick wins - 30/60/90 plans. Managers aligned. Feedback looped.

OKRs?

Objectives + Key Results (quarterly!): measurable, ambitious. Grades reviewed. Stretch celebrated.

Prevent burnout?

Workload, control, rewards, community, fairness, values - mismatches diagnosed. Vacations taken. EAP used.

PTO payouts?

Accrued vacation paid in many states; sick rarely. Policies reviewed pre-resignation. Final checks timed.

Education-leave applications?

Employer tuition aid ($5,250 tax-free!) applied yearly; approvals pre-enrollment. Clawbacks read.

Special-leave applications?

Bereavement, jury, voting, military leaves requested with documentation. Return dates set.

Sick kids backup?

Backup sitters vetted; intermittent FMLA used; PTO coordinated. School nurses listed. Employers informed early.

Caregiver leave options?

State paid days plus federal 12 weeks (partial!): benefits reported promptly. Eldercare located. Schedules flexed.

Education leave?

Employer tuition aid applied yearly; approvals pre-enrollment. Clawbacks read. Credentials stacked.

Special leave types?

Bereavement, jury, voting, military - requested with documentation. Return dates set. Handbooks checked.

Workers comp claims?

Doctors authorized, reported promptly, documented. Retaliation illegal. Attorneys consulted. Settlements reviewed.

Occupational disease worse?

Scheduled conditions: reports, experts, pensions, retraining. Exposures logged contemporaneously. Lawyers specialized.

Boreout signs?

Under-challenge (boredom!): demanded, trained, switched - not laziness. Stretch assignments requested. Managers confronted.

Quiet quitting meaning?

Work-to-rule: signals understood, boundaries healthy, clarified or quit. Engagement surveyed. Workloads audited.

Measure balance?

Hours tracked (50+ critical!): energy balance, priorities, part-time options. Scores reviewed monthly. Boundaries enforced.

Vacation recovery science?

Two-plus weeks needed (studies!): switched off, buffers after, coverage arranged. Unplugged truly. Re-entry buffered.

Detox vacations?

Vacation modes, alarm clocks over phones, emergency numbers - recovery deeper. Photos batched. Teams briefed.

Hobby time?

Compensation fixed-scheduled (calendars!): budgets, groups, progress. Lessons prepaid. Showcases enjoyed.

Volunteering benefits?

Meaning + networks: time budgets, tax deductions, references. Causes aligned. Leadership grown.

Side gig rules?

Licenses (written!), taxes, insurance, competition avoided. EINs obtained. Estimates paid quarterly.

Resume photos?

US resumes: no photos (bias rules!), one-two pages, metrics-led bullets. ATS keywords mirrored. PDFs sent.

LinkedIn essentials?

Headlines keyworded, photos professional, wins quantified, recommendations requested, posted monthly. Recruiters inbound. Skills endorsed.

Contract red flags?

Clauses checked (attorneys!): overtime, non-competes, notice - negotiated. Sign-on clawbacks read. Non-competes narrowed.

Fixed-term contracts?

At-will default (either side!): contracts specify otherwise, chains negotiated. End dates calendared. Renewals initiated.

Probation success?

Ninety days deliver: feedback sought, goals clarified, networks built. Wins documented. Managers aligned.

Reference letters?

Managers plus peers plus clients: asked early, drafts offered, deadlines given. Thank-yous sent.

Onboarding plans?

100 days: learned, networked, quick wins - 30/60/90 plans. Managers aligned. Feedback looped monthly.

OKR cycles?

Objectives + Key Results (quarterly!): measurable, ambitious. Grades reviewed. Stretch celebrated. Wins demoed.

One-on-ones?

Weekly 30 min with managers: blockers, feedback, growth - agendas shared. Notes kept. Careers steered.

Sabbaticals?

Unpaid or time-bank funded: saved, applied, insured. Roles backfilled. Returns re-onboarded.