Unit Converters
Length, weight, volume, area, temperature, energy and more. Pick a ready-made pair like cm to inches, or use an any-to-any converter.
Length & height
- Cm to Feet ConverterConvert centimeters to feet (cm to ft) instantly, with the formula and a quick conversion chart.
- Cm to Inches ConverterConvert centimeters to inches (cm to in) instantly, with the formula and a quick conversion chart.
- Feet to Cm ConverterConvert feet to centimeters (ft to cm) instantly, with the formula and a quick conversion chart.
- Feet to Inches ConverterConvert feet to inches (ft to in) instantly, with the formula and a quick conversion chart.
- Feet to Meters ConverterConvert feet to meters (ft to m) instantly, with the formula and a quick conversion chart.
- Inches to Cm ConverterConvert inches to centimeters (in to cm) instantly, with the formula and a quick conversion chart.
- Inches to Feet ConverterConvert inches to feet (in to ft) instantly, with the formula and a quick conversion chart.
- Meters to Feet & Inches ConverterConvert meters to feet (m to ft) instantly, with the formula and a quick conversion chart.
- Mm to Inches ConverterConvert millimeters to inches (mm to in) instantly, with the formula and a quick conversion chart.
- Km to Miles ConverterConvert kilometers to miles (km to mi) instantly, with the formula and a quick conversion chart.
- Miles to Km ConverterConvert miles to kilometers (mi to km) instantly, with the formula and a quick conversion chart.
- Height ConverterConvert height between feet and inches and centimeters, in either direction.
Weight & mass
- Grams to Pounds ConverterConvert grams to pounds (g to lb) instantly, with the formula and a quick conversion chart.
- Kilos to Pounds ConverterConvert kilograms to pounds (kg to lb) instantly, with the formula and a quick conversion chart.
- Pounds to Kilos ConverterConvert pounds to kilograms (lb to kg) instantly, with the formula and a quick conversion chart.
- Kilos to Stone & Lb ConverterConvert kilograms to stone (kg to st) instantly, with the formula and a quick conversion chart.
- Stone to Pounds ConverterConvert stone to pounds (st to lb) instantly, with the formula and a quick conversion chart.
- Ounces to Pounds ConverterConvert ounces to pounds (oz to lb) instantly, with the formula and a quick conversion chart.
- Micrograms to Mg ConverterConvert micrograms to milligrams (mcg to mg) instantly, with the formula and a quick conversion chart.
- Micrograms to Grams ConverterConvert micrograms to grams (mcg to g) instantly, with the formula and a quick conversion chart.
- Milligrams to Grams ConverterConvert milligrams to grams (mg to g) instantly, with the formula and a quick conversion chart.
Volume
- Cubic feet to Gallons ConverterConvert cubic feet to gallons (cu ft to gal) instantly, with the formula and a quick conversion chart.
- Gallons to Fluid ounces ConverterConvert gallons to fluid ounces (gal to fl oz) instantly, with the formula and a quick conversion chart.
- Liters to Gallons ConverterConvert liters to gallons (L to gal) instantly, with the formula and a quick conversion chart.
- Liters to Fluid ounces ConverterConvert liters to fluid ounces (L to fl oz) instantly, with the formula and a quick conversion chart.
Area
- Acres to Square feet ConverterConvert acres to square feet (ac to sq ft) instantly, with the formula and a quick conversion chart.
- Square feet to Acres ConverterConvert square feet to acres (sq ft to ac) instantly, with the formula and a quick conversion chart.
- Square meters to Square feet ConverterConvert square meters to square feet (sq m to sq ft) instantly, with the formula and a quick conversion chart.
Volume to weight
- Gallons to Pounds ConverterConvert gallons to pounds for 8 common materials. Pick the material and get an accurate figure, not a one-size-fits-all guess.
- Liters to Tons ConverterConvert liters to metric tons for 8 common materials. Pick the material and get an accurate figure, not a one-size-fits-all guess.
- Cubic yards to US tons ConverterConvert cubic yards to US tons for 8 common materials. Pick the material and get an accurate figure, not a one-size-fits-all guess.
- Water Weight CalculatorFind the weight of any volume of water in pounds, kilograms or ounces.
Area to volume
- Square Feet to Cubic Feet CalculatorTurn an area in square feet into a volume in cubic feet by adding a depth.
- Square Feet to Cubic Yards CalculatorWork out how many cubic yards of mulch, soil, gravel or concrete cover an area at a given depth.
Force & torque
- Inch-pounds to Foot-pounds ConverterConvert inch-pounds to foot-pounds (in-lb to ft-lb) instantly, with the formula and a quick conversion chart.
- Newton-meters to Foot-pounds ConverterConvert newton-meters to foot-pounds (N·m to ft-lb) instantly, with the formula and a quick conversion chart.
Electricity & energy
- Amps to Watts CalculatorConvert amps to watts for DC, single-phase AC or three-phase AC circuits.
- Watts to Amps CalculatorConvert watts to amps for DC, single-phase AC or three-phase AC circuits.
- Lumens to Watts CalculatorFind the wattage needed to produce a given brightness in lumens for LED, CFL, halogen and incandescent bulbs.
- Hertz to Seconds ConverterConvert a frequency in hertz to the period of one cycle in seconds.
Unit converters
- Length and Distance ConverterConvert between 9 units of length, including millimeters, centimeters, meters, kilometers and more.
- Area ConverterConvert between 9 units of area, including square centimeters, square meters, hectares, square kilometers and more.
- Liquid Volume ConverterConvert between 13 units of liquid volume, including milliliters, liters, cubic meters, us teaspoons and more.
- Mass and Weight ConverterConvert between 10 units of mass and weight, including micrograms, milligrams, grams, kilograms and more.
- Acceleration ConverterConvert between 6 units of acceleration, including meters per second squared, feet per second squared, standard gravity, gals and more.
- Data Storage ConverterConvert between 11 units of data storage, including bits, bytes, kilobytes, megabytes and more.
- Data Transfer Rate ConverterConvert between 8 units of data transfer rate, including bits per second, kilobits per second, megabits per second, gigabits per second and more.
- Energy ConverterConvert between 9 units of energy, including joules, kilojoules, calories, kilocalories and more.
- Power ConverterConvert between 7 units of power, including watts, kilowatts, megawatts, horsepower and more.
- Pressure ConverterConvert between 8 units of pressure, including pascals, kilopascals, bar, millibar and more.
- Time ConverterConvert between 8 units of time, including milliseconds, seconds, minutes, hours and more.
- Velocity ConverterConvert between 5 units of speed, including meters per second, kilometers per hour, miles per hour, feet per second and more.
- Gold Weight ConverterConvert between 7 units of gold weight, including grams, kilograms, troy ounces, pennyweights and more.
- Temperature ConverterConvert temperatures between Fahrenheit, Celsius and Kelvin.
- Fuel Consumption ConverterConvert fuel economy between US mpg, UK mpg, km per liter and liters per 100 km.