One Name, Several Sizes
Volume is the category where the same word means different amounts depending on where a recipe, label or manual came from. The metric units are the same everywhere; the customary ones are not.
| Unit | US | UK (imperial) | Metric / other |
|---|---|---|---|
| Gallon | 3.785 L | 4.546 L | — |
| Pint | 473 ml | 568 ml | — |
| Fluid ounce | 29.57 ml | 28.41 ml | — |
| Cup | 236.6 ml | — | 250 ml (AU, NZ, CA), 200 ml (Japan) |
| Tablespoon | 14.79 ml | 15 ml | 15 ml; 20 ml in Australia |
| Teaspoon | 4.93 ml | 5 ml | 5 ml |