Metric to Imperial Converter
Convert a value between common metric and imperial units in one table: length, weight, volume and area.
About the Metric to Imperial Converter
Since 1959 imperial units are defined exactly from metric ones: 1 inch = 2.54 cm, 1 foot = 0.3048 m, 1 mile = 1.609344 km, 1 pound = 0.45359237 kg and 1 US gallon = 3.785411784 L. For more units in one category, use the dedicated converters.
The formula
Imperial = metric ÷ exact factor
Exact factors
| Conversion | Multiply by |
|---|---|
| Centimetres → inches | 0.39370079 |
| Metres → feet | 3.2808399 |
| Kilometres → miles | 0.62137119 |
| Kilograms → pounds | 2.20462262 |
| Grams → ounces | 0.03527396 |
| Litres → US gallons | 0.26417205 |
| Millilitres → US fl oz | 0.03381402 |
| Square metres → square feet | 10.76391042 |
| Hectares → acres | 2.47105381 |
Worked example
Example: Common conversions = 5.08 centimetres
- Inputs: Value: 2; Direction: Imperial → metric.
- Formula: Imperial = metric ÷ exact factor
- Result: Common conversions = 5.08 centimetres
Questions people ask
Is a UK gallon the same?
No, 4.54609 L; this uses US gallons.
What does SI stand for?
Système international d'unités, the modern metric system.