ft to mm Converter - Foot to Millimeter

Foot (ft) to Millimeter (mm)

Direct answer

1 ft = 304.8 mm

mm = ft × 304.8

Converter

Input

Result

304.8mm

mm = ft × 304.8

ft = mm × 0.003280839895

Example: 10 ft = 10 × 304.8 = 3,048 mm.

Express both ft and mm in the same base unit m (meter), then cancel the shared base unit.

1
Rewrite ft in the base unit
$1 ft = 0.3048 m$
2
Rewrite mm in the base unit
$1 mm = 0.001 m$
3
Forward conversion
$1 ft = \frac{0.3048 m}{0.001 m} \times 1 mm = \frac{0.3048}{0.001} mm = 304.8 mm$
4
Reverse conversion
$1 mm = \frac{0.001 m}{0.3048 m} \times 1 ft = \frac{0.001}{0.3048} ft = 0.003280839895 ft$

A guarded explanation for this pair page covering definition, principle, assumptions, and cautions.

Guarded output

AI text is for interpretation only. The page calculator remains the source of truth for numeric results.

1 ft = 304.8 mm.

10 ft = 3,048 mm.

100 ft = 30,480 mm.

Use mm = ft × 304.8.

1 mm = 0.003280839895 ft.

Use the conversion factor and round the result to the precision required by your calculation.