Unit converters
Every common conversion between metric and imperial units, using the exact definitions in UK law.
Length and height
- Centimetres to inches: 1 cm = 0.3937 in
- Inches to centimetres: 1 in = 2.54 cm
- Millimetres to inches: 1 mm = 0.03937 in
- Inches to millimetres: 1 in = 25.4 mm
- Feet to metres: 1 ft = 0.3048 m
- Metres to feet: 1 m = 3.281 ft
- Centimetres to feet and inches: 1 cm = 0.03281 ft
- Feet and inches to centimetres: 1 ft = 30.48 cm
- Kilometres to miles: 1 km = 0.6214 miles
- Miles to kilometres: 1 miles = 1.609 km
- Inches to feet: 1 in = 0.08333 ft
- Feet to inches: 1 ft = 12 in
- Yards to metres: 1 yd = 0.9144 m
- Metres to yards: 1 m = 1.094 yd
Area
- Square feet to square metres: 1 sq ft = 0.0929 m²
- Square metres to square feet: 1 m² = 10.764 sq ft
- Acres to hectares: 1 acres = 0.4047 ha
- Hectares to acres: 1 ha = 2.471 acres
Volume and capacity
- Litres to gallons: 1 litres = 0.22 gallons
- Gallons to litres: 1 gallons = 4.546 litres
- Fluid ounces to millilitres: 1 fl oz = 28.413 ml
- Millilitres to fluid ounces: 1 ml = 0.0352 fl oz
- Pints to litres: 1 pints = 0.5683 litres
- Litres to pints: 1 litres = 1.76 pints
Weight
- Kilograms to stone and pounds: 1 kg = 0.1575 st
- Stone and pounds to kilograms: 1 st = 6.35 kg
- Kilograms to pounds: 1 kg = 2.205 lb
- Pounds to kilograms: 1 lb = 0.4536 kg
- Stone to pounds: 1 st = 14 lb
- Pounds to stone: 1 lb = 0.07143 st
Speed
- Miles an hour to kilometres an hour: 1 mph = 1.609 km/h
- Kilometres an hour to miles an hour: 1 km/h = 0.6214 mph