Inches To Millimeters Converter

Convert a length from inches (in) to millimeters (mm). One inch is exactly 25.4 millimeters.




0 mm

Conversion Table

InchesMillimeters
0.01 in0.254 mm
0.1 in2.54 mm
0.5 in12.7 mm
1 in25.4 mm
2 in50.8 mm
5 in127 mm
10 in254 mm
20 in508 mm
100 in2540 mm

Reverse Conversion

Millimeters to Inches

How This Converter Works

Convert inches (in) to millimeters (mm). Since one inch is exactly 25.4 millimeters, multiply the inch amount by 25.4.

Formula or rule

Millimeters = Inches times 25.4

Example

Input
1 in
Calculation
1 times 25.4 = 25.4
Result
25.4 mm
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