Feet to millimetres – convert ft to mm
Convert feet to millimetres (ft to mm) for precise metric dimensions in construction, design, joinery and manufacturing. This page opens the main length converter with ft → mm pre-selected.
Open the interactive ft → mm converter:
Use main converter (ft → mm) or switch to mm → ftThe same homepage tool can also handle inches, centimetres, metres, yards, kilometres and miles.
Quick reference: feet to millimetres
One foot is exactly 304.8 mm. So: mm = ft × 304.8. Examples:
| Length (ft) | Length (mm) |
|---|---|
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 3 ft | 914.4 mm |
| 4 ft | 1,219.2 mm |
| 6 ft | 1,828.8 mm |
| 10 ft | 3,048 mm |
Why convert feet to millimetres?
Feet to millimetres is useful when you:
- Convert room or furniture sizes from ft to metric drawings.
- Order materials from suppliers that quote sizes in millimetres.
- Check clearances and tolerances that are specified in mm.
- Work between imperial site measurements and metric manufacturing.
Other length converters on this site
This converter uses the international foot (exactly 0.3048 m), keeping results consistent with building standards and CAD software.
Page last updated: 4 December 2025.