 Convert Feet (ft) to Millimetres (mm) | ft in mm
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# Let's convert Feet (ft) to Millimetres (mm)

This quick and easy calculator will convert Feet (ft) to Millimetres (mm) and show formula, brief history on the units and quick maths for the conversion.

## Quick Reference for Converting Feet to Millimetres

Formula
mm = ft x 304.8
Quick Rough Maths
To get the Millimetres, multiply the number of Feet by 304.8
Feet (ft) in 1 Millimetre
There are 0 Feet in 1 Millimetre
Millimetres (mm) in 1 Foot
There are 304.8 Millimetres in 1 Foot

## Unit Information

Foot
/fʊt/
Symbol: ft
Unit System: Imperial

### What is the Foot?

The foot is a unit of length in the imperial unit system and uses the symbol ft.

One foot is exactly equal to 12 inches. It is also exactly equal to 0.3048m. One yard is comprised of three feet.

The foot is just behind the metre in terms of widespread use due to its previous popularity. The US is the only developed country that still uses the foot in preference to the metre.

The UK still uses feet to express human height more than metres.

Millimetre
/ˈmɪlɪmiːtə/
Symbol: mm
Unit System: SI

### What is the Millimetre?

The millimetre (American spelling millimeter) is a unit of length and is a multiple of the SI unit metre. It uses the symbol mm.

There are 1000 mm in 1 m and 10 mm in 1 cm. From this one can derive that there are 0.03937 in.

The millimetre is sometimes verbally abbreviated to 'mil' - which can cause confusion in the US as there is a unit there that means thousandth of an inch.