What is 20mil in Millimetres?

You are: Home > Length > Mils to Millimetres

What is 20 Mils (20mil) in Millimetres (mm)?

What is 20mil in mm? Convert 20 Mils (20mil) to Millimetres (mm) and show formula, brief history on the units and quick maths for the conversion.

Enter Mils to convert to Millimetres


Quick Reference for Converting Mils to Millimetres

Formula
mm = mil / 39.37
Quick Rough Maths
To get the Millimetres, divide the number of Mils by 39.4
Mils (mil) in 1 Millimetre
There are 39.37 Mils in 1 Millimetre
Millimetres (mm) in 1 Mil
There are 0.03 Millimetres in 1 Mil

Unit Information

Mil
/mɪl/
Symbol: mil
Unit System: Imperial

What is the Mil?

The mil is a unit of length in the imperial unit system and uses the symbol mil (or sometimes thou).

A mil in one one-thousandth of an inch (0.001 inches) or 25.4 μm.

The mil is still used in the US to measure thickness of various materials.

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.


Conversion Tables for Mils (mil) to Millimetres (mm)