Instant, two-way conversion across common engineering units.
1 ft = 304.8 mm(Foot → Millimetre)
To convert feet to millimeters, multiply the value by 304.8. Length values feed directly into setting out, spans and drawing dimensions, so the converter keeps full decimal precision in both directions.
The foot (ft) equals 12 inches and is the main building unit in US practice.
The millimeter (mm) is one thousandth of a meter and the working unit of technical drawing in most of the world.
1 ft equals 304.8 mm.
Multiply the value by 304.8. For example, 10 ft equals 3,048 mm.
1 mm equals 0.0032808399 ft. The converter above works in both directions, so you can type into either field.
Most architectural and structural drawings outside the US are dimensioned in millimeters to avoid decimal points, while site levels, grids and areas are stated in meters.
Yes. The inch has been defined as exactly 25.4 mm since 1959, so foot, yard and mile conversions are exact rather than rounded.
Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.