Feet to Millimeters converter

To convert feet to millimeters, enter the value in the first field. The result in millimeters is calculated automatically using the exact conversion factor.

1 ft = 304.8 mm
1 mm ≈ 0.00328083989501 ft

Formula: mm = ft × 304.8
ft ≈ mm × 0.00328083989501

Definitions: 1 ft = 12 in; 1 mm = 0.001 m

The foot (ft) is 12 inches, or exactly 0.3048 meters. It is used for height and room dimensions in the United States and the United Kingdom, and in aviation, where altitude is given in feet in most of the world.

The millimeter (mm) is one thousandth of a meter. It is the standard unit for small dimensions in engineering drawings, machining and manufacturing, and for measuring rainfall depth.

See the conversion table with commonly used values, handy for quick reference or study.