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Unit Converter

Every unit in one box — type "5 ft to cm" or "100 km/h in mph".

Runs in your browser · No upload Works offline
Type a number, a unit, then the unit you want. Words like "to" and "in" are optional.
Examples
Result · Length
175.26cm
5 ft 9 in = 175.26 cm
Length — value in every unit
UnitValue (5 ft 9 in)
Millimeter (mm)1,752.6
Centimeter (cm)175.26
Meter (m)1.7526
Kilometer (km)0.0017526
Inch (in)69
Foot (ft)5.75
Yard (yd)1.9166667
Mile (mi)0.0010890152
Nautical mile (nmi)0.00094632829
Ja (Korean traditional) (ja)5.78358
Chi (Korean traditional) (chi)57.8358

Pick units one by one in the Length converter →

Unit types and dedicated converters
TypeSupported unitsDedicated converter
Lengthmm, cm, m, km, in, ft, yd, mi, nmi, ja, chiLength converter
Weightmg, g, kg, t, oz, lb, st, don, nyang, geunWeight converter
Areamm², cm², m², a, ha, km², in², ft², yd², ac, mi², pyeongArea converter
VolumemL, L, cc, m³, tsp, tbsp, fl oz, cup, pt, qt, gal, fl oz (UK), pt (UK), gal (UK), tsp (metric), tbsp (metric), cup (KR), hop, doe, malVolume converter
Temperature°C, °F, K, °RTemperature converter
Speedm/s, km/h, km/s, mph, ft/s, kn, MaSpeed converter
PressurePa, hPa, kPa, MPa, bar, atm, psi, mmHg, Torr, inHg, kgf/cm²Pressure converter
EnergyJ, kJ, MJ, cal, kcal, Wh, kWh, BTU, eVEnergy converter
PowerW, kW, MW, hp, PS, BTU/h, kcal/hPower converter
Data sizebit, B, KB, MB, GB, TB, PB, KiB, MiB, GiB, TiB, PiBData size converter
Timens, μs, ms, s, min, h, d, wk, mo, yr—
Angle°, rad, gon, ′, ″, turn—

How to use

  1. Type a number, a unit, then the unit you want, for example 5 ft to cm, 100 km/h in mph or 72F to C.
  2. The answer appears instantly, and the table below shows the same value in every unit of that kind.
  3. Leave out the target (1 gal) to see the whole table, or leave out the number (kg to lb) to convert one unit.
  4. Prefer picking units from lists? The table at the bottom links to each dedicated converter.

What you can type

Pattern Example Notes
Basic 100 km/h mph “to”, “in”, “→” and “=” are optional
Feet and inches 5 ft 9 in to cm, 5'9" values of the same kind are added together
Mixed durations 1 h 30 min to min
Fractions 1/2 cup to ml
Symbols m², m^2, ℃, °F
Plurals and spellings feet, metres, liters

A few names are ambiguous, so they are read like this:

  • oz is a weight ounce, but 8 oz to ml is read as US fluid ounces because the target is a volume.
  • gal, cup, pint and fl oz mean US units. Use uk gal or imp gal for imperial gallons.
  • hp is mechanical horsepower; PS is metric horsepower.
  • MB, GB are decimal (1 GB = 1,000 MB). Type MiB or GiB for binary sizes.

Examples

  • 5 ft 9 in to cm → 175.26 cm
  • 72F to C → 22.22 °C
  • 8 oz to ml → 236.59 mL
  • 35 psi to bar → 2.41 bar
  • 2000 kcal to kJ → 8,368 kJ
  • 1 rad to deg → 57.30°

Things to keep in mind

  • Months and years are averages (1 year = 365.2425 days, 1 month = 30.436875 days). For the exact span between two dates, use the date difference calculator.
  • Temperatures cannot be added together, because their zero points differ.
  • Currencies are not units; use the currency converter.

FAQ

Which units are supported?

The table at the bottom lists every supported unit symbol by type — length, weight, area, volume, temperature, speed, pressure, energy, power, data size, time and angle. Full names and plurals work too.

How precise are the results?

Results are shown to eight significant digits without trimming whole-number digits. The copy button copies the unrounded value.

Is anything I type sent to a server?

No. Parsing and conversion run entirely in your browser.

Length ConverterMetric, imperial and nautical lengths — all units at once. Weight ConverterKilograms, pounds, ounces and stone — all units at once. Temperature ConverterCelsius, Fahrenheit, Kelvin and Rankine, with formulas. Volume ConverterLiters, US and UK gallons, cups, fl oz and spoons — all units at once. Area ConverterSquare feet, square meters, acres and hectares at once.

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