Convert Foot to Millimetre
Turn feet into Millimetres in an instant. Type a value below to get an accurate ft → mm result, with the formula and a quick-reference table.
1 ft = 304.8 mm
Quick answer: 1 Foot = 304.8 Millimetre
Foot to Millimetre conversion table
| Foot (ft) | Millimetre (mm) |
|---|---|
| 1 ft | 304.8 mm |
| 2 ft | 609.6 mm |
| 5 ft | 1,524 mm |
| 10 ft | 3,048 mm |
| 20 ft | 6,096 mm |
| 50 ft | 15,240 mm |
| 100 ft | 30,480 mm |
| 500 ft | 152,400 mm |
| 1,000 ft | 304,800 mm |
How to convert Foot to Millimetre
To convert feet to Millimetres, multiply the value by 304.8.
- Take your measurement in feet.
- Multiply it by 304.8 — the number of Millimetres in one Foot.
- The result is the same amount, expressed in Millimetres.
To go the other way, multiply Millimetres by 0.0032808399 — or simply divide by 304.8.
For example, a tall adult is about 6 ft, which is 1,828.8 mm.
About Foot and Millimetre
A foot is 12 inches, or exactly 0.3048 metres. It is used across the US and UK for a person's height, room dimensions and aircraft altitude.
A millimetre is one-thousandth of a metre (1/1000 m) — the smallest line printed on a standard ruler. It is the everyday unit for fine measurements such as engineering tolerances, screw threads, paper thickness and rainfall.
The Foot is a imperial / US customary unit while the Millimetre comes from the metric system — which is exactly why this conversion comes up so often. One Foot equals 304.8 Millimetres.
Other length conversions
Frequently asked questions
How many Millimetres are in a Foot?
1 Foot equals 304.8 Millimetre (ft → mm). To convert any amount, multiply the number of feet by 304.8.
How do I convert Foot to Millimetre?
Enter the number of feet in the converter above and read the result in Millimetres. It applies the exact ft → mm factor instantly, with full precision.
Is the Foot to Millimetre converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined length factors and full floating-point precision, then rounds the display to a clean, readable number.