Unit conversions
One quick converter for each of the most common conversions, with the exact formula, a worked example and a table of everyday values. For anything else, the full unit converter covers over 100 units.
Length
- Centimetres to Inches1 cm = 0.393701 in
- Inches to Centimetres1 in = 2.54 cm
- Millimetres to Inches1 mm = 0.03937 in
- Inches to Millimetres1 in = 25.4 mm
- Metres to Feet1 m = 3.28084 ft
- Feet to Metres1 ft = 0.3048 m
- Metres to Yards1 m = 1.093613 yd
- Yards to Metres1 yd = 0.9144 m
- Kilometres to Miles1 km = 0.621371 mi
- Miles to Kilometres1 mi = 1.609344 km
Weight
- Kilograms to Pounds1 kg = 2.204623 lb
- Pounds to Kilograms1 lb = 0.453592 kg
- Grams to Ounces1 g = 0.035274 oz
- Ounces to Grams1 oz = 28.349523 g
- Kilograms to Stone1 kg = 0.157473 st
- Stone to Kilograms1 st = 6.350293 kg
Volume
- Litres to UK gallons1 L = 0.219969 gal (UK)
- UK gallons to Litres1 gal (UK) = 4.54609 L
- Litres to US gallons1 L = 0.264172 gal (US)
- US gallons to Litres1 gal (US) = 3.785412 L
- Millilitres to UK fluid ounces1 ml = 0.035195 fl oz (UK)
- UK fluid ounces to Millilitres1 fl oz (UK) = 28.413062 ml
- Millilitres to US fluid ounces1 ml = 0.033814 fl oz (US)
- US fluid ounces to Millilitres1 fl oz (US) = 29.57353 ml
- Litres to UK pints1 L = 1.759754 pt (UK)
- UK pints to Litres1 pt (UK) = 0.568261 L
Temperature
Speed
- Kilometres per hour to Miles per hour1 km/h = 0.621371 mph
- Miles per hour to Kilometres per hour1 mph = 1.609344 km/h
Area
- Square metres to Square feet1 m² = 10.76391 ft²
- Square feet to Square metres1 ft² = 0.092903 m²
- Hectares to Acres1 ha = 2.471054 ac
- Acres to Hectares1 ac = 0.404686 ha
Energy
Pressure
- Bar to Pounds per square inch1 bar = 14.503774 psi
- Pounds per square inch to Bar1 psi = 0.068948 bar