About this calculator
Every conversion you need on a mixed metric and imperial site, in one table.
How it’s calculated
Values are converted through SI base units using exact factors (1 in = 25.4 mm; 1 lb = 0.45359237 kg).
Worked example
With these inputs:
- Convert
- Length
- Value
- 1
- From
- m
the result is:
- 1 m =
- 3.2808 ft
- Feet-inches
- 3' 3-3/8"
- mm
- 1,000
- cm
- 100
- km
- 0.001
Tips from the trade
- US tons are 2,000 lb. A metric tonne is 1,000 kg (2,204.6 lb).
- US gallons (3.785 L) are smaller than UK gallons (4.546 L).
Results are estimates for planning and pricing. Check quantities against your drawings, the manufacturer’s data and the Building Regulations before ordering.