Conversion Calculators
Every measurement system humans ever invented lives side by side in this category, and this is where they meet. Convert length, weight, temperature, volume, area, speed, time, pressure, energy, and data units between metric, US customary, and imperial systems with exact defined factors. Temperature gets special handling because Celsius Fahrenheit and Kelvin start at different zeros, and cooking measures get honest labels because a US cup and a metric cup are genuinely different sizes. Alongside unit conversion you will find number-format converters: fractions to decimals, roman numerals, binary hex and octal, and text case tools. Each converter states its definitions up front, so you always know whether that gallon is American or imperial and whether that ounce is fluid or weight. Type a value, pick the units, and get an instant answer with the factor shown, ready to double-check by hand.
36 free conversion calculators. Every tool runs instantly in your browser with the formula shown, a worked example, and answers to common questions.
Acceleration Conv converts a measurement from one unit to another using exact conversion factors.
Angle converts a measurement from one unit to another using exact conversion factors.
Bit Rate Conv converts a measurement from one unit to another using exact conversion factors.
Cooking Conv converts a measurement from one unit to another using exact conversion factors.
Currency Conv converts a measurement from one unit to another using exact conversion factors.
Data Storage converts a measurement from one unit to another using exact conversion factors.
Density Conv converts a measurement from one unit to another using exact conversion factors.
Energy converts a measurement from one unit to another using exact conversion factors.
Flow Rate Conv converts a measurement from one unit to another using exact conversion factors.
Force Conv converts a measurement from one unit to another using exact conversion factors.
Fraction Percent converts a measurement from one unit to another using exact conversion factors.
Frequency Conv converts a measurement from one unit to another using exact conversion factors.
Fuel Efficiency Converter converts a measurement from one unit to another using exact conversion factors.
Length converts a measurement from one unit to another using exact conversion factors.
Luminance Conv converts a measurement from one unit to another using exact conversion factors.
Molarity Conv converts a measurement from one unit to another using exact conversion factors.
Power Conv converts a measurement from one unit to another using exact conversion factors.
Ppm Conv converts a measurement from one unit to another using exact conversion factors.
Pressure Conv converts a measurement from one unit to another using exact conversion factors.
Radiation Conv converts a measurement from one unit to another using exact conversion factors.
Radiation Dose Conv converts a measurement from one unit to another using exact conversion factors.
Roman Numeral converts a measurement from one unit to another using exact conversion factors.
Speed converts a measurement from one unit to another using exact conversion factors.
Temperature converts a measurement from one unit to another using exact conversion factors.
Thermal Conductivity converts a measurement from one unit to another using exact conversion factors.
Time Conv converts a measurement from one unit to another using exact conversion factors.
Torque Conv converts a measurement from one unit to another using exact conversion factors.
Viscosity Conv converts a measurement from one unit to another using exact conversion factors.
Voltage Conv converts a measurement from one unit to another using exact conversion factors.
Volume converts a measurement from one unit to another using exact conversion factors.
Weight converts a measurement from one unit to another using exact conversion factors.