Convert feet to millimeters instantly. Enter a value below, or use the formula and reference table further down the page.
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How to convert feet to millimeters
Multiply the value by 304.8.
mm = ft × 304.8Example: 10 ft = 3048 mm.
Feet to Millimeters conversion table
| Feet (ft) | Millimeters (mm) |
|---|---|
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 3 ft | 914.4 mm |
| 4 ft | 1219.2 mm |
| 5 ft | 1524 mm |
| 10 ft | 3048 mm |
| 15 ft | 4572 mm |
| 20 ft | 6096 mm |
| 25 ft | 7620 mm |
| 50 ft | 15240 mm |
| 100 ft | 30480 mm |
Frequently asked questions
How many millimeters is 1 foot?
1 foot equals 304.8 millimeters.
What is the formula to convert ft to mm?
To convert ft to mm, multiply the value by 304.8. The full formula is: mm = ft × 304.8.
How do I convert millimeters back to feet?
Use the same calculator above and type your value into the millimeters field instead — it converts in both directions. Or use the reverse formula: ft = mm ÷ 304.8.
Is the ft to mm conversion exact?
The conversion factor used here (304.8) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.