Convert Feet to millimeters
1 foot = 304.8 millimeters · mm = ft × 304.8
When you need this conversion
This conversion goes from feet, the US customary unit for height, rooms, and building dimensions, to millimeters, the metric unit used for hardware, engineering drawings, and anything needing sub-centimeter precision. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Feet to millimeters conversion table
| Feet (ft) | Millimeters (mm) |
|---|---|
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 3 ft | 914.4 mm |
| 5 ft | 1,524 mm |
| 10 ft | 3,048 mm |
| 15 ft | 4,572 mm |
| 20 ft | 6,096 mm |
| 25 ft | 7,620 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 |
The formula
mm = ft × 304.8Because both units measure length, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Millimeters to feet →Related length conversions
- Feet to centimeters
- Feet to yards
- Micrometers to millimeters
- Millimeters to micrometers
- Centimeters to inches
- Centimeters to feet
- Meters to kilometers
- Kilometers to meters
- Inches to centimeters
- Yards to feet
- Centimeters to millimeters
- Meters to millimeters
Frequently asked questions
- How many millimeters are in a foot?
- There are 304.8 millimeters in 1 foot. The formula is mm = ft × 304.8.
- How do you convert feet to millimeters?
- Use the formula mm = ft × 304.8. For example, 10 feet equals 3,048 millimeters.
- Is the feet to millimeters conversion exact?
- Yes. Feet and millimeters are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
- What is ft short for?
- ft is the standard symbol for foot (also written as ft). mm is the symbol for millimeter.