Convert Inches to Millimeters Online

Inches to Millimeters Conversion

Any physical quantity can be written as:

Q = nu , where n= numerical value and u = unit used

We know that:

1 in = 25.4 mm

1 mm = 0.0393701 in

So, You can easily convert your quantity in inches to mm by simply multiply it by 25.4

Hence , general formula To convert inches to Millimeters:

p(mm) = 25.4 × p(in), where p is the numerical value

For example:

Convert 10 inches to mm

10 in = 10 × 25.4 mm = 254 mm

Inches to Millimeters Conversion Chart

About Inch (in)

Name of unit: Inch

Abbreviation: in

Symbol: ''

Unit system: Imperial System

Definition: Inch is the unit of length used in both British Imperial (BI) and US Customary (USC) systems of measurements. One inch is equal to 1/12th of a foot or 1/36th of a yard. Yard, inch, foot and mile are US Customary units of length. In metric system , one inch is equal to 2.54 cm or 0.0254 m.

Uses of inch: Inch is used to measure the length, distance or height of smaller things in our day-to-day life.

Example: paper, clothes, furniture etc. Inch is used to measure the length and size of display screens for laptops, LCDs etc like 43 inch smart tv ( 43'' ).

Countries that use Inch: Inch is used to measure the length or height of objects in the US Customary system of measurements. So the countries that use the inch as the unit of length are Canada, the United States, the United Kingdom, Liberia and Myanmar. Also Japan and Europe use inches for measuring display screens.

About Millimetre (mm)

Name of unit: Millimetre

Abbreviation: mm

Unit system: metric system

Definition: Millimetre is the metric unit of length used to measure the length of very small objects or distances. In SI units, the fundamental unit of length is the metre and 'milli' is the latin word refers to the prefix of the metre which is equal to one thousandth i.e 0.001 ( 1 mm = 1/1000m ). Thus we can say that millimetre is one thousandth of a metre.

Uses of mm: Millimetre is the small unit of length. So , it is used to measure the length of very tiny objects like nib of a pen, a pencil or a needle , thickness of sheet or cloth etc . Miillimetre is also used various fields like physics, chemistry , medicines, mathematics etc for small measurements.

Countries that use CM: Millimetere is the metric unit of length, so it is used by all other countries around the world excluding the US, Liberia and Myanmar.