How to convert feet to millimeters
Feet and Millimeters both measure length, so converting is a single multiplication. One ft equals 304.8 mm, so you multiply your feet value by 304.8.
Formula: millimeters = feet × 304.8. For example, 10 ft = 3,048 mm.
Feet to Millimeters conversion table
| Feet (ft) | Millimeters (mm) |
|---|---|
| 1 | 304.8 |
| 2 | 609.6 |
| 5 | 1,524 |
| 10 | 3,048 |
| 25 | 7,620 |
| 50 | 15,240 |
| 100 | 30,480 |
| 1,000 | 304,800 |
Feet and Millimeters explained
Feet (ft): Twelve inches (0.3048 m), used for height and room dimensions in the US and UK.
Millimeters (mm): One-thousandth of a metre, used for small, precise measurements like rainfall or engineering tolerances.
When you'd convert feet to millimeters
You'll convert feet to millimeters whenever a measurement is given in one unit but you need it in the other — comparing feet and millimeters figures across regions, following a recipe or spec, or double-checking a number. Because 1 ft is exactly 304.8 mm, the result is precise every time.
Frequently asked questions
How many millimeters are in a feet?
One ft equals 304.8 mm. Multiply your feet figure by 304.8 to get millimeters.
What is the formula to convert feet to millimeters?
millimeters = feet × 304.8. The factor 304.8 is exact.
What is 2 feet in millimeters?
2 ft = 609.6 mm. You can enter any value in the converter above to get an instant result.
Is this Feet to Millimeters converter accurate?
Yes. It uses the standard conversion factor (1 ft = 304.8 mm) defined by BIPM — SI Brochure (definition of the metre), so results are exact to several decimal places.