Formula
ft to mm conversion formula
Use this relationship for a direct conversion:
mm = ft x 304.8
Worked example
2 ft = 609.6 mm.
Metric factors and international inch, foot, yard, mile, and nautical mile definitions are exact.
Length conversion
Convert Foot to Millimeter
1 foot (ft) equals 304.8 millimeter (mm). Enter any value below to convert from ft to mm.
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1 ft = 304.8 mm
All Length units
From 1 ft| Unit | Value |
|---|---|
| Meter m | 0.3048 |
| Kilometer km | 0.0003048 |
| Centimeter cm | 30.48 |
| Millimeter mm | 304.8 |
| Micrometer μm | 304,800.0000000001 |
| Nanometer nm | 304,800,000 |
| Inch in | 12 |
| Foot ft | 1 |
| Yard yd | 0.3333333333 |
| Mile mi | 0.0001893939 |
| Nautical mile nmi | 0.0001645788 |
| Light-year ly | 3.2217385421e-17 |
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Quick reference
Foot to Millimeter table
| Foot (ft) | Millimeter (mm) |
|---|---|
| 0.01 | 3.048 |
| 0.1 | 30.48 |
| 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 |
From unit
About the foot
Exactly 12 inches or 0.3048 meter.
Symbol: ft
To unit
About the millimeter
One thousandth of a meter.
Symbol: mm
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Conversion standard
Definitions are checked against NIST SP 811: Guide for the Use of the SI. Calculations use full internal precision before display rounding.
View the complete length converterQuestions
ft to mm FAQ
How do you convert foot to millimeter?
Use the formula mm = ft x 304.8. 1 foot (ft) equals 304.8 millimeter (mm).
Is the ft to mm conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.