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ItalianoEvery calculator you need. One fast site.
Percentage, BMI, mortgage, unit converters, colors, ASCII and more - with a clean modern look and dark mode.
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Scientific Calculator
Advanced calculator with sin, cos, sqrt, log and instant results.
Open →Percentage Calculator
X% of Y, what percent, and percent change.
Open →BMI Calculator
Body Mass Index with WHO weight category.
Open →Mortgage Calculator
Monthly payment, total cost and interest breakdown.
Open →Age Calculator
Exact age in years, months and days from birth date.
Open →Length Converter
mm, cm, m, km, inch, feet, yard, mile.
Open →Temperature Converter
Celsius, Fahrenheit and Kelvin instantly.
Open →Color Converter
HEX ↔ RGB ↔ HSL with live preview.
Open →🧮 Calculators
Math, finance, health & everyday calculations.
Scientific Calculator
Advanced calculator with sin, cos, sqrt, log and instant results.
Open →Percentage Calculator
X% of Y, what percent, and percent change.
Open →Fraction Calculator
Add, subtract, multiply and divide fractions with simplification.
Open →Average Calculator
Mean, sum, count, min & max of any number list.
Open →BMI Calculator
Body Mass Index with WHO weight category.
Open →Mortgage Calculator
Monthly payment, total cost and interest breakdown.
Open →Compound Interest Calculator
Growth of savings with compounding + monthly deposits.
Open →Age Calculator
Exact age in years, months and days from birth date.
Open →Loan Calculator
Monthly payment, total cost and interest for any loan.
Open →Simple Interest Calculator
Interest and total with non-compounding interest.
Open →Discount Calculator
Sale price, savings and tax for percent-off deals.
Open →VAT & Sales Tax Calculator
Add or extract VAT/GST at any rate worldwide.
Open →Profit Margin Calculator
Margin, markup and profit from cost and price.
Open →APY / Effective Rate Calculator
Nominal ↔ effective annual rate, any compounding.
Open →Inflation Calculator
Future prices and present purchasing power.
Open →Salary Converter
Hourly wage ↔ annual salary with full breakdown.
Open →Tip Calculator
Tip, total and per-person split for any bill.
Open →Grade Calculator
Test score to percent and letter grade (A+…F).
Open →GPA Calculator
Weighted GPA from grades and credit hours.
Open →Final Grade Calculator
Score needed on the final to hit your target.
Open →GPA ↔ Letter Grade Converter
Both directions between GPA points and letters.
Open →Standard Deviation Calculator
Mean, median, variance and SD (population + sample).
Open →Weighted Average Calculator
Average with custom weights per value.
Open →GCF & LCM Calculator
Greatest common factor and least common multiple.
Open →Factorial Calculator
n! for 0-170, for probability and combinatorics.
Open →Exponent & Root Calculator
Powers and nth roots, negatives handled.
Open →Quadratic Equation Solver
ax²+bx+c=0 with real and complex roots.
Open →Pythagorean Theorem Calculator
Missing side of any right triangle.
Open →Ratio Calculator
Simplify ratios and scale proportions.
Open →Percent Error Calculator
Measurement accuracy vs accepted value.
Open →Rounding Calculator
Round to decimals, tens or hundreds.
Open →Random Number Generator
Secure random integers, dice and draws.
Open →Date Duration Calculator
Days between dates; add/subtract from any date.
Open →Birthday Calculator
Age, birth weekday, zodiac and next-birthday countdown.
Open →Time Calculator
Add/subtract H:MM times - hours and timesheets.
Open →Sleep Cycle Calculator
Best bedtimes and wake times in 90-min cycles.
Open →Ohm’s Law Calculator
Any two of V/I/R/P - solves the rest.
Open →Electric Power Calculator
Watts, kW, VA, kVA for DC and AC circuits.
Open →Electricity Bill Calculator
kWh and cost of appliances or meter readings.
Open →Voltage Divider Calculator
Output voltage, current and power of R1/R2.
Open →Wire Gauge (AWG) Converter
AWG to mm, mm² and copper resistance.
Open →Voltage Drop Calculator
Drop and loss % for cable runs, Cu/Al.
Open →Lumens ↔ Watts Converter
LED brightness to power at any efficacy.
Open →Lux / Lumens Converter
Lux, lumens and footcandles with room area.
Open →Calorie Calculator (TDEE)
BMR + daily calories to maintain, lose or gain.
Open →Body Fat Calculator
US Navy estimate from tape measurements.
Open →Pregnancy Due Date Calculator
Due date, current week and days to go.
Open →Ovulation Calculator
Fertile window, ovulation day, next period.
Open →Running Pace Calculator
Pace/km, pace/mile and km/h from time.
Open →Fuel Cost Calculator
Trip fuel and cost, metric or US units.
Open →🔄 Converters
Length, temperature, weight and more.
Length Converter
mm, cm, m, km, inch, feet, yard, mile.
Open →Temperature Converter
Celsius, Fahrenheit and Kelvin instantly.
Open →Weight Converter
mg, g, kg, tonnes, ounces, pounds, stone.
Open →Area Converter
m², hectares, acres, ft², mi² and more.
Open →Volume Converter
Liters, gallons, cups, fl oz, m³ and more.
Open →Speed Converter
km/h, mph, m/s, knots, ft/s.
Open →Time Converter
ms, seconds, minutes, hours, days, weeks, years.
Open →Pressure Converter
Pa, bar, PSI, atm, mmHg and more.
Open →Energy Converter
Joules, calories, kWh, BTU, eV and more.
Open →Power Converter
Watts, kW, horsepower, BTU/h, dBm.
Open →Data Converter
Bits, bytes, KB/MB/GB/TB and KiB/MiB/GiB.
Open →Angle Converter
Degrees, radians, gradians, turns, arcmin/sec.
Open →Voltage Converter
µV, mV, V, kV, MV, GV.
Open →Frequency Converter
Hz, kHz, MHz, GHz, THz, rad/s.
Open →Electric Charge Converter
Coulombs, mAh, Ah, electron charges.
Open →Number Converter
Binary, octal, decimal, hex + scientific notation.
Open →Roman Numerals Converter
Numbers ↔ Roman numerals, plus dates.
Open →PPM Converter
Percent, ppm, ppb and ppt.
Open →Decimal ↔ Fraction Converter
Decimals to fractions, fractions to decimals, percent.
Open →Height Converter
Centimeters ↔ feet + inches.
Open →Cooking Converter
Cups and spoons to grams for 12 ingredients.
Open →Fuel Economy Converter
MPG (US/UK), L/100km, km/L.
Open →Currency Converter
USD, EUR, GBP, JPY and more with live rates.
Open →Time Zone Converter
Any time between 25 world zones, DST-aware.
Open →🛠 Web & Text Tools
Colors, ASCII reference and a private notepad.
Color Converter
HEX ↔ RGB ↔ HSL with live preview.
Open →ASCII Table
Full ASCII chart: decimal, hex, HTML entity and symbol.
Open →Online Notepad
Distraction-free notes, auto-saved in your browser.
Open →Word Counter
Words, characters, sentences, reading time.
Open →Case Converter
UPPER, lower, Title and Sentence case.
Open →Lorem Ipsum Generator
Fresh placeholder text for mockups.
Open →Base64 Encoder / Decoder
Encode and decode Base64, strictly validated.
Open →URL Encoder / Decoder
Percent-encoding for links and queries.
Open →JSON Formatter & Validator
Pretty-print JSON with clear error messages.
Open →Timestamp Converter
Unix timestamps ↔ UTC dates.
Open →Binary & Hex Translator
Text ↔ binary and text ↔ hex.
Open →Hash Generator
MD5, SHA-1, SHA-256, SHA-512 checksums.
Open →Password Generator
Strong random passwords - unique every click.
Open →Stopwatch
Millisecond stopwatch with laps.
Open →Countdown Timer
Timer with alarm and Pomodoro preset.
Open →To-Do List
Minimal tasks, auto-saved in your browser.
Open →Click Counter & CPS Test
Counter plus 5-second click-speed test.
Open →Tone Generator
Sine/square/sawtooth tones, 20 Hz-20 kHz.
Open →Text to Speech
Read any text aloud with voice control.
Open →Current Time
World clock: exact time in 14 cities.
Open →No tools found. Try “percentage”, “BMI” or “temperature”.
Why CalcoMat?
People want fast, no-nonsense calculators. CalcoMat puts every everyday calculator and converter in one quick, clean place - with instant search and dark mode. Pick a tool above, enter your numbers, and get your answer right away.