EngiRef / Length conversion
Convert Feet to Millimeters (ft to mm)
1 ft = 304.8 mm. Convert feet to millimeters with the exact factor, a common-values table and a free converter.
Conversion factor
mm = ft × 304.8
1 ft = 304.8 mm
Multiply by 304.8 mm to go from feet to millimeters, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
ft to mm table
| Feet (ft) | Millimeters (mm) |
|---|---|
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 5 ft | 1524 mm |
| 10 ft | 3048 mm |
| 20 ft | 6096 mm |
| 50 ft | 15240 mm |
| 100 ft | 30480 mm |
Every figure is computed at build time by the site’s own converter from the length unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many millimeters are in one foot?
One foot is 304.8 mm, so 100 ft is 30480 mm.
What is the formula to convert feet to millimeters?
mm = ft × 304.8. Multiply the value in feet by 304.8 to get millimeters.
How do I convert millimeters back to feet?
ft = mm × 0.0032808399, so 1 mm is 0.0032808399 ft. The mm to ft page carries the same table in that direction.