Unit Conversion Utils

Unit converters for length, weight, temperature, volume, speed, pressure, and many more measurement types — all client-side.

Acceleration

Online calculator and conversion table for acceleration units.

Angle

Convert between degrees, radians, gradians, and turns. Fast and accurate.

Area

Online calculator and conversion table for area units.

Astronomical

Online calculator and conversion table for astronomical distances and lengths.

Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, and custom bases.

Capacitance

Online calculator and conversion table for electrical capacitance units.

Clothing Size Converter

Convert international clothing sizes between US, UK, EU, and JP for tops, dresses, and pants.

Data Storage

Online calculator for converting computer data storage and memory units.

Data Transfer

Online calculator for converting computer data transfer rates (bandwidth / speed).

Density

Online calculator and conversion table for density (mass per unit volume).

Electric Charge

Online calculator and conversion table for electric charge units.

Electrical Resistance

Online calculator and conversion table for electrical resistance units.

Energy Converter

Convert between energy and work units including joules, kilowatt-hours, calories, BTU, electronvolts, and more.

Force Converter

Convert between force units including newtons, dynes, kilogram-force, pound-force, kip, poundal, and more.

Frequency Converter

Convert between Hz, kHz, MHz, GHz, THz, RPM, and radians per second. Fast and accurate.

Fuel Economy

Convert between MPG, L/100km, km/L, and more. Fast and accurate fuel efficiency conversion.

Illuminance

Convert between illuminance units including lux, foot-candle, phot, nox, and lumen per square meter.

Inductance

Convert between inductance units including henry, microhenry, millihenry, nanohenry, and weber per ampere. For electronics and circuit design.

Length / Distance

Convert between meters, feet, inches, yards, miles, kilometers, and more. Fast, accurate, and easy to use.

Power

Convert between Watts, Kilowatts, Horsepower, BTU/h, and more. Fast and accurate.

Pressure

Convert between Pascal, Bar, PSI, atmosphere, mmHg, and more. Fast and accurate.

Ring Size Converter

Convert ring sizes between US, UK, EU, and mm diameter, with an on-screen sizing circle.

Shoe Size Converter

Convert shoe sizes between US, UK, EU, and cm/inches for men, women, and kids with a full chart.

Speed

Convert between km/h, mph, m/s, knots, and more. Fast and accurate velocity conversion.

Substance Amount

Online calculator and conversion table for amount of substance units (one of the seven SI base quantities).

Temperature

Convert between Celsius, Fahrenheit, and Kelvin. Fast, accurate, and easy to use.

Time

Convert between time units including seconds, minutes, hours, days, weeks, months, and years. Includes nanoseconds, microseconds, and milliseconds.

Viscosity

Convert between Pascal-second, poise, centipoise, and more. Fast and accurate dynamic viscosity conversion.

Volume

Convert between liters, gallons, milliliters, cups, pints, quarts, and more. Fast and accurate.

Weight

Convert between kilograms, pounds, ounces, grams, tons, and more. Fast and accurate.

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Unit Conversion Utils

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