Unit converters by category
Each page shows the formula, a conversion table and both directions. Or use the general unit converter.
Length
- metres to feet · feet to metres
- centimetres to inches · inches to centimetres
- kilometres to miles · miles to kilometres
- millimetres to inches · inches to millimetres
- metres to yards · yards to metres
- feet to inches · inches to feet
- nautical miles to kilometres · kilometres to nautical miles
- kilometres to metres · metres to kilometres
- centimetres to feet · feet to centimetres
Weight & mass
- kilograms to pounds · pounds to kilograms
- grams to ounces · ounces to grams
- kilograms to stones · stones to kilograms
- pounds to ounces · ounces to pounds
- tonnes to kilograms · kilograms to tonnes
- milligrams to grams · grams to milligrams
- stones to pounds · pounds to stones
- US tons to kilograms · kilograms to US tons
Temperature
Area
- square metres to square feet · square feet to square metres
- acres to hectares · hectares to acres
- square kilometres to square miles · square miles to square kilometres
- square feet to square yards · square yards to square feet
- acres to square feet · square feet to acres
- marlas to square feet · square feet to marlas
- kanals to marlas · marlas to kanals
- kanals to square feet · square feet to kanals
- acres to kanals · kanals to acres
- square yards to marlas · marlas to square yards
- square metres to square yards · square yards to square metres
- hectares to square metres · square metres to hectares
- square inches to square centimetres · square centimetres to square inches
Volume
- litres to US gallons · US gallons to litres
- litres to UK gallons · UK gallons to litres
- millilitres to US fluid ounces · US fluid ounces to millilitres
- millilitres to UK fluid ounces · UK fluid ounces to millilitres
- US cups to millilitres · millilitres to US cups
- tablespoons to millilitres · millilitres to tablespoons
- teaspoons to millilitres · millilitres to teaspoons
- litres to cubic metres · cubic metres to litres
- US gallons to UK gallons · UK gallons to US gallons
- UK pints to millilitres · millilitres to UK pints
- US pints to millilitres · millilitres to US pints
- litres to millilitres · millilitres to litres
Speed
- kilometres per hour to miles per hour · miles per hour to kilometres per hour
- metres per second to kilometres per hour · kilometres per hour to metres per second
- knots to miles per hour · miles per hour to knots
- knots to kilometres per hour · kilometres per hour to knots
- feet per second to miles per hour · miles per hour to feet per second
Time
Digital storage
- megabytes to gigabytes · gigabytes to megabytes
- gigabytes to terabytes · terabytes to gigabytes
- kilobytes to megabytes · megabytes to kilobytes
- bits to bytes · bytes to bits
- gibibytes to gigabytes · gigabytes to gibibytes
- mebibytes to megabytes · megabytes to mebibytes
- kibibytes to kilobytes · kilobytes to kibibytes
Pressure
- bar to pounds per square inch · pounds per square inch to bar
- kilopascals to pounds per square inch · pounds per square inch to kilopascals
- atmospheres to bar · bar to atmospheres
- millimetres of mercury to kilopascals · kilopascals to millimetres of mercury
- bar to kilopascals · kilopascals to bar
- millibars to kilopascals · kilopascals to millibars
- pounds per square inch to pascals · pascals to pounds per square inch
Energy
- kilojoules to kilocalories · kilocalories to kilojoules
- joules to calories · calories to joules
- kilowatt-hours to megajoules · megajoules to kilowatt-hours
- kilowatt-hours to British thermal units · British thermal units to kilowatt-hours
- calories to kilocalories · kilocalories to calories
- watt-hours to joules · joules to watt-hours
- kilowatt-hours to kilojoules · kilojoules to kilowatt-hours