How to convert feet to millimeters
mm = ft × 304.8Multiply the value in feet by 304.8. To go the other way, multiply by 0.003280839895 (or divide by 304.8).
A foot is larger than a millimeter: one foot contains 304.8 millimeters.
Worked examples
- 1 foot1 ft × 304.8 = 304.8 mm
- 5 feet5 ft × 304.8 = 1,524 mm
- 10 feet10 ft × 304.8 = 3,048 mm
- 20 feet20 ft × 304.8 = 6,096 mm
- 100 feet100 ft × 304.8 = 30,480 mm
Feet to millimeters conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Feet (ft) | Millimeters (mm) |
|---|---|
| 0.1 ft | 30.48 mm |
| 0.25 ft | 76.2 mm |
| 0.5 ft | 152.4 mm |
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 3 ft | 914.4 mm |
| 4 ft | 1,219.2 mm |
| 5 ft | 1,524 mm |
| 6 ft | 1,828.8 mm |
| 7 ft | 2,133.6 mm |
| 8 ft | 2,438.4 mm |
| 9 ft | 2,743.2 mm |
| 10 ft | 3,048 mm |
| Feet (ft) | Millimeters (mm) |
|---|---|
| 12 ft | 3,657.6 mm |
| 15 ft | 4,572 mm |
| 20 ft | 6,096 mm |
| 25 ft | 7,620 mm |
| 30 ft | 9,144 mm |
| 40 ft | 12,192 mm |
| 50 ft | 15,240 mm |
| 75 ft | 22,860 mm |
| 100 ft | 30,480 mm |
| 250 ft | 76,200 mm |
| 500 ft | 152,400 mm |
| 1,000 ft | 304,800 mm |
About the units
Foot (ft)
Exactly 0.3048 m, or 12 inches. Feet are used in the US for height, room dimensions and aircraft altitude; a standard ceiling is 8 ft.
Millimeter (mm)
One thousandth of a metre. Millimetres are the standard unit on engineering drawings, rulers and rainfall gauges; a credit card is about 0.76 mm thick. One millimeter equals 0.001 meters (m).
Frequently asked questions
How many millimeters are in one foot?
There are 304.8 millimeters in one foot, and this value is exact by definition.
How do I convert feet to millimeters?
Multiply the number of feet by 304.8. For example, 10 ft × 304.8 = 3,048 mm.
How many feet are in one millimeter?
One millimeter equals 0.003280839895 feet. That is the reverse factor, 1 ÷ 304.8.
What is 10 feet in millimeters?
10 ft = 3,048 mm.
Is this ft to mm converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.