Unit conversions
Quick answers for common conversions. For anything else, use the unit converter.
Length
- Centimetres to inches · 1 cm = 0.393700787402 in
- Inches to centimetres · 1 in = 2.54 cm
- Metres to feet · 1 m = 3.28083989501 ft
- Feet to metres · 1 ft = 0.3048 m
- Kilometres to miles · 1 km = 0.621371192237 mi
- Miles to kilometres · 1 mi = 1.609344 km
- Millimetres to inches · 1 mm = 0.0393700787402 in
- Inches to millimetres · 1 in = 25.4 mm
- Metres to yards · 1 m = 1.09361329834 yd
- Yards to metres · 1 yd = 0.9144 m
Mass and weight
- Kilograms to pounds · 1 kg = 2.20462262185 lb
- Pounds to kilograms · 1 lb = 0.45359237 kg
- Grams to ounces · 1 g = 0.0352739619496 oz
- Ounces to grams · 1 oz = 28.349523125 g
- Stone to kilograms · 1 st = 6.35029318 kg
- Kilograms to stone · 1 kg = 0.157473044418 st
Temperature
- Celsius to Fahrenheit · 1 °C = 33.8 °F
- Fahrenheit to Celsius · 1 °F = -17.2222222222 °C
- Celsius to kelvin · 1 °C = 274.15 K
- Kelvin to Celsius · 1 K = -272.15 °C
Volume
- Litres to US gallons · 1 L = 0.264172052358 gal (US)
- US gallons to litres · 1 gal (US) = 3.785411784 L
- Millilitres to US fluid ounces · 1 mL = 0.0338140227018 fl oz (US)
- US fluid ounces to millilitres · 1 fl oz (US) = 29.5735295625 mL
- US cups to millilitres · 1 cup (US) = 236.5882365 mL
- Litres to UK gallons · 1 L = 0.219969248299 gal (UK)
Area
- Square metres to square feet · 1 m² = 10.7639104167 ft²
- Square feet to square metres · 1 ft² = 0.09290304 m²
- Acres to hectares · 1 ac = 0.40468564224 ha
- Hectares to acres · 1 ha = 2.47105381467 ac
Speed
- Km/h to mph · 1 km/h = 0.621371192237 mph
- Mph to km/h · 1 mph = 1.609344 km/h
- Knots to km/h · 1 kn = 1.852 km/h
Data size
- Gigabytes to megabytes · 1 GB = 1,000 MB
- Megabytes to gigabytes · 1 MB = 0.001 GB
- Gibibytes to gigabytes · 1 GiB = 1.073741824 GB
Energy
- Kilocalories to kilojoules · 1 kcal = 4.184 kJ
- Kilojoules to kilocalories · 1 kJ = 0.239005736138 kcal
Pressure
- Bar to psi · 1 bar = 14.503773773 psi
- Psi to bar · 1 psi = 0.0689475729317 bar
Fuel economy
- US mpg to litres per 100 km · 1 mpg (US) = 235.214583333 L/100 km
- Litres per 100 km to UK mpg · 1 L/100 km = 282.480936332 mpg (UK)