Conversation factor
| Length | Multiply by |
| Inches to Centimetres | 2.54 |
| Centimetres to Inches | 0.39 |
| Inches to Millimetres | 25.4 |
| Millimetres to Inches | 0.04 |
| Feet to Metres | 0.31 |
| Metres to Feet | 3.28 |
| Yards to Metres | 0.91 |
| Metres to Yards | 1.09 |
| Miles to Kilometres | 1.61 |
| Kilometres to Miles | 0.62 |
| Area | Multiply by |
| Square Inches to Square Centimetres | 6.451 |
| Square Centimetres to Square Inches | 0.15 |
| Square Feet to Square Metres | 0.09 |
| Square Metres to Square Feet | 10.76 |
| Square Yards to Square Metres | 0.84 |
| Square Metres to Square Yards | 1.2 |
| Square Miles to Square Kilometres | 2.59 |
| Square Kilometres to Square Miles | 0.39 |
| Acres to Hectares | 0.4 |
| Hectares to Acres | 2.47 |
| Volume | Multiply by |
| Cubic Inches to Cubic Centimetres | 16.39 |
| Cubic Centimetres to Cubic Inches | 0.06 |
| Cubic Feet to Cubic Metres | 0.03 |
| Cubic Metres to Cubic Feet | 35.32 |
| Cubic Yards to Cubic Metres | 0.76 |
| Cubic Metres to Cubic Yards | 1.31 |
| Cubic Inches to Litres | 0.02 |
| Litres to Cubic Inches | 61.03 |
| Gallons to Litres | 4.55 |
| Litres to Gallons | 0.22 |
| US Gallons to Litres | 3.79 |
| Litres to US Gallons | 0.26 |
| Fluid Ounces to Cubic Millilitres | 30.77 |
| Cubic Millilitres to Fluid Ounces | 0.03 |
| Weight | Multiply by |
| Ounces to Grams | 28.35 |
| Grams to Ounces | 0.04 |
| Pounds to Kilograms | 0.45 |
| Kilograms to Pounds | 2.21 |
| Long Tons to Tonnes | 1.02 |
| Tonnes to Long Tons | 0.98 |