Length Converter
Convert between metric and imperial lengths instantly. One inch is exactly 25.4 mm by international definition.
Common length conversions
| Conversion | Result |
|---|---|
| 1 inch | 2.54 cm |
| 1 foot | 30.48 cm |
| 1 yard | 0.9144 m |
| 1 mile | 1.6093 km |
| 1 metre | 3.2808 ft |
| 1 centimetre | 0.3937 in |
Worked example
An 8 ft stud: 8 ft x 304.8 mm per ft = 2,438.4 mm, which is 243.84 cm or 2.4384 m. Enter 8, choose Feet, then choose Centimetres to see 243.84 cm.
Frequently asked questions
How many centimetres are in an inch?
Exactly 2.54 cm. The inch has been defined as exactly 25.4 mm since 1959, so metric to imperial length conversions are exact, not estimates.
Why does Canadian lumber use feet if Canada is metric?
Canada officially uses metric, but building materials are still sized for the North American market, so studs, plywood and pipe are sold in feet and inches while plans and codes are often in millimetres. This converter bridges both.
Results are provided for general reference. Verify critical measurements before cutting or ordering materials.