General Data > Imperial and Metric Conversions
The charts below may be useful in assisting you to convert values from imperial to metric and vice-versa. They are arranged into relevant groups. In some cases we have also included the American equivalent as sometimes American science websites and books are used in schools and may include these imperial/obsolete units.
Area Conversion
| Imperial/USA unit |
Metric (SI) unit |
| Metric (SI) unit |
Imperial/USA
unit |
| Acre |
0.40 hectare |
|
Hectare |
2.47 acres |
| Square inch |
6.45 square centimetres |
|
Square centimetre |
0.16 square inches |
| Square foot |
0.09 square metres |
|
Square metre |
|
| Square yard |
0.84 square metres |
|
Square metre |
1.20 square yards |
| Square mile |
2.60 square kilometres |
|
Square kilometre |
0.39 square miles |
| Cubic foot |
0.028 cubic metres |
|
Cubic metre |
35.23 cubic feet |
| Cubic yard |
0.76 cubic metres |
|
|
|
Volume Conversion
| Imperial/USA unit |
Metric (SI) unit |
|
Metric (SI) unit |
Imperial/USA unit |
| Teaspoon (UK) |
5.92 millilitres |
|
Millilitre |
0.17 teaspoons (UK) |
| Teaspoon (US) |
4.93 millilitres |
|
|
0.20 teaspoons (US) |
| Tablespoon (UK) |
17.76 millilitres |
|
10 Millilitre |
0.56 tablespoons (UK) |
| Tablespoon (US) |
14.79 millilitres |
|
|
0.68 tablespoons (US) |
| Fluid ounce (UK) |
28.41 millilitres |
|
100 millilitre |
3.52 fluid ounces (UK) |
| Fluid ounce (US) |
29.57 millilitres |
|
|
3.38 fluid ounces (US) |
| Pint (UK) |
0.57 litres |
|
Litre |
1.76 pints (UK) |
| Pint (US) |
0.47 litres |
|
|
2.11 pints (US) |
| Quart (UK) |
1.14 litres |
|
|
0.88 quarts (UK) |
| Quart (US) |
0.95 litres |
|
|
1.06 quarts (US) |
| Gallon (UK) |
4.55 litres |
|
|
0.22 gallon (UK) |
| Gallon (US) |
3.79 litres |
|
|
0.26 gallons (US) |
Length Conversion
| Imperial/USA unit |
Metric (SI) unit |
|
Metric (SI) unit |
Imperial/USA unit |
| Inch |
2.54 centimetres |
|
Centimetre |
0.39 inches |
| Foot |
30.48 centimetres |
|
Metre |
3.28 feet |
| Yard |
0.91 metres |
|
Metre |
1.09 yards |
| Mile |
1.61 kilometres |
|
Kilometre |
0.62 miles |
Weight Conversion
| Imperial/USA unit |
Metric (SI) unit |
|
Metric (SI) unit |
Imperial/USA unit |
| Ounce (weight) |
28.35 grams |
|
Gram |
0.035 ounces |
| Pound |
0.45 kilograms |
|
Kilogram |
2.21 pounds |
| UK tons (2240 pounds) |
1.02 metric tonnes |
|
Metric tonne (1000 kg) |
0.98 UK tons |
| US ton (2000 pounds) |
0.91 metric tons |
|
Metric ton (1000 kg) |
1.10 US tons |
Temperature Conversions
For temperature conversions from Celsius to Fahrenheit and vice-versa, use the following equation:
To convert Fahrenheit to Celsius, subtract 32 degrees and divide by 1.8.
To convert Celsius to Fahrenheit, multiply by 1.8 and add 32 degrees.