US Customary Units
Units peculiar to the United States, chiefly the smaller wine-gallon family of liquid measures and the 2000-pound short ton. 9 units are listed.
| Unit | Symbol | Quantity | Value in SI |
|---|---|---|---|
| US liquid gallon | gal | Volume | 231 in³ = 3.785411784 L (exact) |
| US fluid ounce | fl oz | Volume | 29.5735295625 mL (exact) |
| US pint | pt | Volume | 473.176473 mL (exact) |
| US cup | c | Volume | 236.5882365 mL (customary); 240 mL (legal) |
| Teaspoon | tsp | Volume | 4.92892159375 mL (US, exact) |
| US bushel | bu | Volume | 35.23907016688 L (2150.42 in³, exact) |
| Oil barrel | bbl | Volume | 42 US gal = 158.987294928 L (exact) |
| Short ton | tn | Mass | 907.18474 kg (2000 lb, exact) |
| US survey foot | ft (US) | Length | 1200/3937 m ≈ 0.3048006 m |