Convert Millimeters to Feet
1 millimeter (mm) equals 0.003280839895 feet (ft).
1 mm = 0.003280839895 ft
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millimeter to foot converter to paste a column from Excel.
How to Convert Millimeter to Foot
- 1 mm = 0.003280839895 ft
- 1 ft = 304.8 mm
- Example: convert 15 mm to ft: 15 mm = 15 × 0.003280839895 ft = 0.04921259843 ft
Reference conditions. ft: The international yard and pound agreement (1959) fixed 1 yard = 0.9144 m exactly, so the inch, foot and mile are exact.
Formula
ft = mm × 0.003280839895013
or ft = mm ÷ 304.8
Derivation from SI units:
- 1 mm = 10⁻³ m
- 1 ft = 12 in = 0.3048 m (exact)
- 1 mm = 0.001 m ÷ 0.3048 m per ft = 0.003280839895013 ft
Both units are defined exactly, so the factor is exact. Millimeter definition: millimeter; Foot definition: foot.
Worked examples
- A reading of 8 mm converts to 0.02624671916 ft.
8 mm × 0.003280839895 = 0.02624671916 ft - A value of 30 mm is 0.09842519685 ft.
30 mm × 0.003280839895 = 0.09842519685 ft
Millimeter to Foot conversion table
| Millimeters (mm) | Feet (ft) |
|---|---|
| 0.1 mm | 0.0003280839895 ft |
| 0.5 mm | 0.001640419948 ft |
| 1 mm | 0.003280839895 ft |
| 2 mm | 0.00656167979 ft |
| 3 mm | 0.009842519685 ft |
| 5 mm | 0.01640419948 ft |
| 6 mm | 0.01968503937 ft |
| 8 mm | 0.02624671916 ft |
| 10 mm | 0.03280839895 ft |
| 12 mm | 0.03937007874 ft |
| 15 mm | 0.04921259843 ft |
| 16 mm | 0.05249343832 ft |
| 20 mm | 0.0656167979 ft |
| 25 mm | 0.08202099738 ft |
| 25.4 mm | 0.08333333333 ft |
| 30 mm | 0.09842519685 ft |
| 50 mm | 0.1640419948 ft |
| 75 mm | 0.2460629921 ft |
| 100 mm | 0.3280839895 ft |
| 150 mm | 0.4921259843 ft |
| 300 mm | 0.9842519685 ft |
| 500 mm | 1.640419948 ft |
| 1000 mm | 3.280839895 ft |
Where it's used
Millimeters are used for engineering drawings and machining tolerances, while feet appear in building dimensions and ceiling heights in the US. Both measure length and distance, so the conversion is a fixed factor.
Millimeter to other length units
| Conversion | 1 mm equals |
|---|---|
| millimeter to meter | 0.001 m |
| millimeter to kilometer | 0.000001 km |
| millimeter to centimeter | 0.1 cm |
| millimeter to micrometer | 1000 µm |
| millimeter to nanometer | 1000000 nm |
| millimeter to angstrom | 10000000 Å |
| millimeter to mile | 6.213711922 × 10⁻⁷ mi |
| millimeter to yard | 0.001093613298 yd |
| millimeter to foot | 0.003280839895 ft |
| millimeter to inch | 0.03937007874 in |
| millimeter to mil | 39.37007874 mil |
| millimeter to nautical mile | 5.399568035 × 10⁻⁷ nmi |
Frequently asked questions
How many feet are in 1 millimeter?
1 mm = 0.003280839895 ft.
How do I convert millimeters to feet?
Multiply the value in mm by 0.003280839895, or divide it by 304.8. For example, 15 mm × 0.003280839895 = 0.04921259843 ft.
Is the mm to ft conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "foot (ft)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Millimeters to Feet. Retrieved October 17, 2026, from https://scientificconverters.com/length/millimeters-to-feet/
IEEE
Scientific Converters, "Convert Millimeters to Feet," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/millimeters-to-feet/