Appendix C: Imperial (U.S.) units
U.S. customary units differ from imperial (Canadian/UK) units, especially for liquid measure. Always confirm which system is being used.
Imperial (U.S.) Units
Table 1: Length – Imperial (U.S.) Units
| Unit |
Conversion |
| foot (ft.) |
1 ft = 12 inches (in.) |
| yard (yd.) |
1 yd = 3 ft |
| mile (mi.) |
1 mi = 5,280 ft |
Table 2: Liquid Measure
| Unit |
Conversion |
| pint (pt.) |
1 pt = 2 cups |
| quart (qt.) |
1 qt = 2 pt |
| gallon (gal.) |
1 gal = 4 qt |
Table 3: Weight
| Unit |
Conversion |
| pound (lb.) |
1 lb = 16 ounces (oz.) |
| ton |
1 ton = 2000 lb |
Metric to Imperial (U.S.) Conversions
Table 4: Length
| Metric Unit |
Imperial Equivalent |
| 1 cm |
0.394 in. |
| 1 m |
39.4 in. |
| 1 km |
0.621 mi |
Table 5: Area
| Metric Unit |
Imperial Equivalent |
| 1 hectare |
2.47 acres |
| 1 km² |
0.386 sq. mi. |
Table 6: Liquid Measure
| Metric Unit |
Imperial Equivalent |
| 1 L |
0.26 gal |
| 1 L |
4.23 cups |
Table 7: Mass/Weight
| Metric Unit |
Imperial Equivalent |
| 1 g |
0.0353 oz |
| 1 kg |
2.20 lb |
Imperial (U.S.) to Metric Conversions
Table 8: Length
| Imperial Unit |
Metric Equivalent |
| 1 in. |
2.54 cm |
| 1 yd |
0.914 m |
| 1 mi |
1.61 km |
Table 9: Area
| Imperial Unit |
Metric Equivalent |
| 1 acre |
0.405 ha |
| 1 sq. mi. |
2.59 km² |
Table 10: Liquid Measure
| Imperial Unit |
Metric Equivalent |
| 1 gal |
3.79 L |
| 1 cup |
0.24 L |
Table 11: Mass/Weight
| Imperial Unit |
Metric Equivalent |
| 1 gal |
3.79 L |
| 1 cup |
0.24 L |
Printable sheets:
