| Units Converter Values within each group are equivalent. Enter new values for instant update. | ||||||
|---|---|---|---|---|---|---|
Length |
millimetres(mm) | inches(") | feet, / inches | |||
| metres(m) | feet(') | yards | ||||
| kilometres(km) | miles(mi) | light years | ||||
| microns(µm) | nanometres(nm) | Planck lengths | ||||
Area |
square cm(cm²) | square inches(inch²) | square feet(ft²) | |||
| square metres(m²) | hectares(ha) | acres | ||||
| square km(km²) | square miles(mi²) | football pitches | ||||
Weight |
grammes(g) | ounces(oz) | tonnes(t) | |||
| kilogram(kg) | pounds(lb) | stone | ||||
Temperature |
Celsius(°C) | Fahrenheit(°F) | Kelvin(K) | |||
Number Bases |
decimal(n10) | hexadecimal(n16) | octal(n8) | |||
| Roman | binary(n2) | |||||
Volume |
cubic cm(cc/ml) | cubic inches(inch³) | cubic feet(ft³) | |||
| litres(l) | pints(UK) | gallons(UK) | ||||
| cubic metres(m³) | pints(US) | gallons(US) | ||||
Pressure |
millibars(mb) | inches Hg | altitude(metres) | |||
| bar | kilopascals(kPa) | psi | ||||
Angle |
degrees(°) | radians(rad) | V |
cardinal direction | ||
| revolutions | % gradient | 1 in gradient | ||||
Fuel Usage |
litres/100km | miles/gallon(UK) | miles/gallon(US) | |||
Power |
watts(W) | kilowatts(kW) | horsepower(hp) | |||
Energy |
kilowatt hours(kWh) | Thermal Units (BTU) | kilocalories | |||
Speed |
metres/sec(m/s) | km/hour(kph) | miles/hour(mph) | |||
| millimetres/sec | metres/minute | % light speed(% c) | ||||
Notes |
Large and small numbers are represented by powers of 10 in "E ± XX" format. Exponents are multiples of 3 to match SI prefixes (kilo, mega, giga, etc.); e.g. 51.8E+06 = 51.8 x 106 = 51.8 mega. To the right is a list of multipliers. >>> |
E+03--103----kilo(k)--thousand E+06--106----mega(M)--million E+09--109----giga(G)--billion E+12--1012---tera(T)--trillion E+15--1015---peta(P)--quadrillion E+18--1018----exa(E)--quintillion E+21--1021--zetta(Z)--sextillion E+24--1024--yotta(Y)--septillion E+27--1027--ronna(R)--octillion E+30--1030-quetta(Q)--nonillion |
E-03--10-3---milli(m)--thousandth E-06--10-6---micro(µ)--millionth E-09--10-9----nano(n)--billionth E-12--10-12---pico(p)--trillionth E-15--10-15--femto(f)--quadrillionth E-18--10-18---atto(a)--quintillionth E-21--10-21--zepto(z)--sextillionth E-24--10-24--yocto(y)--septillionth E-27--10-27--ronto(r)--octillionth E-30--10-30-quecto(q)--nonillionth |
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