Convert Calibers (cl) to Millimetres (mm) | cl in mm

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Let's convert Calibers (cl) to Millimetres (mm)

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

Enter Calibers to convert to Millimetres


Quick Reference for Converting Calibers to Millimetres

Formula
mm = cl / 3.94
Quick Rough Maths
To get the Millimetres, divide the number of Calibers by 3.9
Calibers (cl) in 1 Millimetre
There are 3.94 Calibers in 1 Millimetre
Millimetres (mm) in 1 Caliber
There are 0.25 Millimetres in 1 Caliber

Unit Information

Caliber
/ˈkalɪbə/
Symbol: cl
Unit System: Imperial

What is the Caliber?

The caliber is a unit of length based on the inch (imperial units) and uses the symbol cl.

It represents the internal diameter of a gun barrel and therefore more often than not, the size of the ammunition or round that gun requires to fire.

It is not always represented or converted exactly in inches so a table or "well-known" conversions are often used to depict measurements / ammo types instead.

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 Calibers (cl) to Millimetres (mm)