Calculate everything. Simply.

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Percentage Calculator

Calculate percentages, changes and shares.

½

Fraction Calculator

Calculate with fractions — auto simplified.

x̄

Average Calculator

Calculate mean, median and mode.

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Scientific Calculator

Trigonometry, logarithms and constants.

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Unit Converter

Length, weight, temperature and more.

📏

Length Converter

Inches to cm, km to miles and more.

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Volume Converter

Tablespoons to ml, liters and gallons.

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Time Converter

Seconds, minutes, hours, days, years.

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Angle Converter

Degrees to radians and back.

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Circle Area

Calculate area, circumference and radius.

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Circle Converter

Diameter to circumference and radius.

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Rectangle Calculator

Diagonal, area and perimeter.

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BMI Calculator

Calculate BMI and calorie needs.

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Calorie Calculator

Calculate BMR and daily calorie needs.

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Square Root

Square root, cube root and nth root.

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Power

Exponentiation with presets.

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Triangle Area

Calculate area with base/height or three sides.

∉

Pythagorean Theorem

Calculate hypotenuse or leg.

𝑥

Equation Solver

Solve linear and quadratic equations.

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Multiplication Table

Interactive table 1-12 to practice.

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Rule of Three

Calculate the fourth proportional value.

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Roman Numerals

Convert to and from Roman numerals.

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Number Base Converter

Binary, hexadecimal, octal and decimal.

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Days Between Dates

Calculate days, weeks and months between dates.

🎂

Age Calculator

Calculate your exact age.

💰

Salary Calculator

Calculate salary after tax.

⛽

Fuel Calculator

Calculate fuel cost for trips.

⇄

Centimeters to Inches

in = cm × 0.393701

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Inches to Centimeters

cm = in × 2.54

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Kilometers to Miles

mi = km × 0.621371

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Meters to Feet

ft = m × 3.28084

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Cup to Milliliters

ml = cup × 236.59

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Liters to Gallon

gal = l × 0.264172

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Fahrenheit to Celsius

°C = (°F − 32) × 5/9

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Celsius to Fahrenheit

°F = °C × 9/5 + 32

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Kilograms to Pounds

lb = kg × 2.20462

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Hectares to Square meters

m² = ha × 10000

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Word Counter

Count words, characters and sentences.