Imperial Units
British imperial units that differ from US customary ones, set by the Weights and Measures Act 1824 and fixed exactly in metric terms by the 1985 Act. 7 units are listed.
| Unit | Symbol | Quantity | Value in SI |
|---|---|---|---|
| Stone | st | Mass | 6.35029318 kg (14 lb, exact) |
| Long hundredweight | cwt | Mass | 50.80234544 kg (112 lb, exact) |
| Long ton | LT | Mass | 1016.0469088 kg (2240 lb, exact) |
| Imperial gallon | gal | Volume | 4.54609 L (exact) |
| Imperial pint | pt | Volume | 568.26125 mL (exact) |
| Imperial fluid ounce | fl oz | Volume | 28.4130625 mL (exact) |
| Imperial bushel | bu | Volume | 36.36872 L (8 imperial gallons) |