Mm to feet
One mm equals 0.003280839895 ft. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| mm | feet |
|---|---|
| 1 mm | 0.0032808399 ft |
| 2 mm | 0.0065616798 ft |
| 3 mm | 0.0098425197 ft |
| 5 mm | 0.016404199 ft |
| 10 mm | 0.032808399 ft |
| 15 mm | 0.049212598 ft |
| 20 mm | 0.065616798 ft |
| 25 mm | 0.082020997 ft |
| 50 mm | 0.16404199 ft |
| 100 mm | 0.32808399 ft |
| 500 mm | 1.6404199 ft |
| 1000 mm | 3.2808399 ft |
How to use
- Enter the number of mm in the field.
- The result in feet updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: ft = mm ÷ 304.8. Going back the other way, one ft is 304.8 mm.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
ft = mm ÷ 304.8
Frequently asked questions
How many feet are in one mm?
One mm is 0.003280839895 ft.
How do I convert mm to feet?
Multiply by the factor: ft = mm ÷ 304.8.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert feet back to mm?
One ft is 304.8 mm — or open the reverse page linked below.