| acre | = | 0.404 hectares |
| degree (°) | = | 1/360 of the circumference of a circle |
| fathom | = | 1.82 metres or 6 feet |
| foot | = | 0.305 metres |
| gallon | = | 4.55 litres |
| knot | = | 1 nautical mile per hour |
| league | = | 1/20 of a degree or 3 nautical miles |
| mile | = | 1.61 kilometres |
| minute | = | 1/60 of a degree |
| nautical mile | = | 1 minute of latitude or 1.852 kilometres |
| ounce | = | 28.35 grams |
| pound | = | 0.45 kilograms |
| ton | = | 1.016 tonnes |