How to convert feet to millimeters
To convert feet to millimeters, multiply by 304.8. Length conversions are used everywhere from construction drawings and travel distances to sewing patterns and science homework.
Foot to Millimeter conversion table
| Foot (ft) | Millimeter (mm) |
|---|---|
| 0.1 ft | 30.48 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 |
| 10 ft | 3,048 mm |
| 20 ft | 6,096 mm |
| 25 ft | 7,620 mm |
| 50 ft | 15,240 mm |
| 100 ft | 30,480 mm |
| 500 ft | 152,400 mm |
| 1,000 ft | 304,800 mm |
About the units
Foot (ft)
A foot equals 12 inches, or exactly 0.3048 meters. It is common for height, room dimensions and aviation altitude.
Millimeter (mm)
A millimeter is one thousandth of a meter. It is the standard unit on engineering drawings, rulers and screw sizes.
How to use this converter
- Type the number of feet (ft) in the input box.
- The result in millimeters appears instantly — no button needed.
- See the same value in every other length unit just below.
- Use “Swap units” to convert millimeters back to feet.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many millimeters are in one foot?
One foot equals 304.8 millimeters. 304.8 is the exact factor used by this converter.
How do I convert feet to millimeters?
Multiply the value in feet by 304.8. To go the other way, multiply millimeters by 0.00328083989501.
What is 10 ft in mm?
10 ft = 3,048 mm. Also, 5 ft = 1,524 mm and 100 ft = 30,480 mm.
What is the difference between a foot and a millimeter?
A foot equals 12 inches, or exactly 0.3048 meters. It is common for height, room dimensions and aviation altitude. A millimeter is one thousandth of a meter. It is the standard unit on engineering drawings, rulers and screw sizes.
Is this tool free and private?
Yes — the Foot to Millimeter is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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