What is 20mil in Micrometres?

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What is 20 Mils (20mil) in Micrometres (μm)?

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

Enter Mils to convert to Micrometres


Quick Reference for Converting Mils to Micrometres

Formula
μm = mil x 25.4
Quick Rough Maths
To get the Micrometres, multiply the number of Mils by 25.4
Mils (mil) in 1 Micrometre
There are 0.04 Mils in 1 Micrometre
Micrometres (μm) in 1 Mil
There are 25.4 Micrometres 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.

Micrometre
/ˈmʌɪkrə(ʊ)ˌmiːtə/
Symbol: μm
Unit System: SI

What is the Micrometre?

The micrometre (American spelling micrometer) is a unit of length and is a multiple of the SI unit metre. It uses the symbol μm.

It represents one millionth of a metre and is also known by its previously depreciated name micron.

In the US, the term 'micron' helped distinguish the unit name from the device 'micrometer' but the International System of Units (SI) discontinued this term in favour of micrometre as the prefix system required the use of the Greek symbol 'μ' which invoked the factor x10−6.


Conversion Tables for Mils (mil) to Micrometres (μm)