Feet and Millimeters are both units used to measure length or height, but they belong to different measurement systems. A Foot (ft) is part of the imperial system and is mainly used in countries like the USA and UK, while a Millimeter (mm) is part of the metric system and is used for very small measurements, such as in construction, design, or engineering.
Basis of Comparison
Feet (ft)
Millimeter (mm)
Meaning
A unit of length used for medium to large measurements.
A small metric unit used for very tiny measurements.
Measurement System
Imperial system
Metric system
Symbol
ft
mm
Conversion Value
1 Foot = 304.8 Millimeters
1 Millimeter = 0.00328 Feet
Used In
Commonly used for height, room size, and construction.
Commonly used in engineering, manufacturing, and small-scale design.
Size
Larger unit of length.
Much smaller unit of length.
Common Uses
Measuring people’s height, furniture, or building dimensions.
Measuring machine parts, tools, or precise lengths.
Ease of Use
Easier for general and larger measurements.
Easier for detailed and precise measurements.
Foot (ft) to Millimeter (mm) Conversion Table
Foot [ft]
Millimeter [mm]
1 ft
304.80 mm
2 ft
609.60 mm
3 ft
914.40 mm
4 ft
1219.20 mm
5 ft
1524.00 mm
10 ft
3048.00 mm
15 ft
4572.00 mm
20 ft
6096.00 mm
25 ft
7620.00 mm
50 ft
15240.00 mm
100 ft
30480.00 mm
1000 ft
304800.00 mm
Feet (ft) to Millimeter (mm) – Most Frequently Asked Questions