Unit conversions
234 direct converters, each with the formula, a worked example and a reference table. For anything not listed, the full unit converter handles every unit in every category.
Length
cm to inches cm → in inches to cm in → cm meters to feet m → ft feet to meters ft → m km to miles km → mi miles to km mi → km mm to inches mm → in inches to mm in → mm meters to yards m → yd yards to meters yd → m cm to feet cm → ft feet to cm ft → cm feet to inches ft → in inches to feet in → ft km to meters km → m meters to km m → km miles to feet mi → ft feet to miles ft → mi nautical miles to km nmi → km km to nautical miles km → nmi mm to cm mm → cm cm to mm cm → mm cm to meters cm → m meters to cm m → cm yards to feet yd → ft feet to yards ft → yd meters to inches m → in inches to meters in → m yards to inches yd → in inches to yards in → yd meters to mm m → mm mm to meters mm → m meters to miles m → mi miles to meters mi → m feet to km ft → km km to feet km → ft nautical miles to miles nmi → mi miles to nautical miles mi → nmi decimeter to cm dm → cm cm to decimeter cm → dm micrometer to mm µm → mm mm to micrometer mm → µm nanometer to micrometer nm → µm micrometer to nanometer µm → nm fathom to meters ftm → m meters to fathom m → ftm light year to parsec ly → pc parsec to light year pc → ly light year to km ly → km km to light year km → ly astronomical unit to km AU → km km to astronomical unit km → AU
Weight
kg to lbs kg → lb lbs to kg lb → kg g to oz g → oz oz to g oz → g kg to stone kg → st stone to kg st → kg lbs to oz lb → oz oz to lbs oz → lb g to kg g → kg kg to g kg → g tonnes to kg t → kg kg to tonnes kg → t lbs to stone lb → st stone to lbs st → lb mg to g mg → g g to mg g → mg kg to oz kg → oz oz to kg oz → kg mg to kg mg → kg kg to mg kg → mg lbs to g lb → g g to lbs g → lb tonnes to lbs t → lb lbs to tonnes lb → t
Volume
liters to gallons L → gal gallons to liters gal → L ml to fl oz ml → fl oz fl oz to ml fl oz → ml liters to imperial gallons L → imp gal imperial gallons to liters imp gal → L cups to ml cup → ml ml to cups ml → cup liters to ml L → ml ml to liters ml → L cubic meters to liters m³ → L liters to cubic meters L → m³ pints to ml pt → ml ml to pints ml → pt liters to cups L → cup cups to liters cup → L ml to tsp ml → tsp tsp to ml tsp → ml ml to tbsp ml → tbsp tbsp to ml tbsp → ml tbsp to tsp tbsp → tsp tsp to tbsp tsp → tbsp liters to quarts L → qt quarts to liters qt → L gallons to quarts gal → qt quarts to gallons qt → gal cubic meters to cubic feet m³ → ft³ cubic feet to cubic meters ft³ → m³ cubic feet to gallons ft³ → gal gallons to cubic feet gal → ft³
Area
square meters to square feet m² → ft² square feet to square meters ft² → m² acres to square feet ac → ft² square feet to acres ft² → ac hectares to acres ha → ac acres to hectares ac → ha square meters to square yards m² → yd² square yards to square meters yd² → m² hectares to square meters ha → m² square meters to hectares m² → ha square centimeter to square inch cm² → in² square inch to square centimeter in² → cm² acres to square meters ac → m² square meters to acres m² → ac square centimeter to square meters cm² → m² square meters to square centimeter m² → cm² square km to square miles km² → mi² square miles to square km mi² → km² square miles to acres mi² → ac acres to square miles ac → mi² square miles to square feet mi² → ft² square feet to square miles ft² → mi²
Speed
kmh to mph km/h → mph mph to kmh mph → km/h mps to kmh m/s → km/h kmh to mps km/h → m/s knots to kmh kn → km/h kmh to knots km/h → kn knots to mph kn → mph mph to knots mph → kn mps to mph m/s → mph mph to mps mph → m/s mph to fps mph → ft/s fps to mph ft/s → mph knots to mps kn → m/s mps to knots m/s → kn
Temperature
Data
MB to GB MB → GB GB to MB GB → MB GB to TB GB → TB TB to GB TB → GB KB to MB KB → MB MB to KB MB → KB bytes to KB B → KB KB to bytes KB → B bits to bytes b → B bytes to bits B → b MB to bytes MB → B bytes to MB B → MB GB to bytes GB → B bytes to GB B → GB KB to GB KB → GB GB to KB GB → KB TB to MB TB → MB MB to TB MB → TB PB to TB PB → TB TB to PB TB → PB GB to GiB GB → GiB GiB to GB GiB → GB MB to MiB MB → MiB MiB to MB MiB → MB TB to TiB TB → TiB TiB to TB TiB → TB KB to KiB KB → KiB KiB to KB KiB → KB
Time
minutes to seconds min → s seconds to minutes s → min hours to minutes h → min minutes to hours min → h days to hours d → h hours to days h → d weeks to days wk → d days to weeks d → wk years to days yr → d days to years d → yr milliseconds to seconds ms → s seconds to milliseconds s → ms hours to seconds h → s seconds to hours s → h days to minutes d → min minutes to days min → d years to months yr → mo months to years mo → yr months to weeks mo → wk weeks to months wk → mo years to hours yr → h hours to years h → yr weeks to hours wk → h hours to weeks h → wk
Energy
calories kcal to kJ kcal → kJ kJ to calories kcal kJ → kcal kWh to joules kWh → J joules to kWh J → kWh calories to joules cal → J joules to calories J → cal kWh to Wh kWh → Wh Wh to kWh Wh → kWh kJ to joules kJ → J joules to kJ J → kJ calories kcal to calories kcal → cal calories to calories kcal cal → kcal