Inch to MM Conversion Calculator

This may not be directly related to 3D printing, but this conversion calculator can live here for the time being. It comes in handy when designing if you have to convert some outdated, caveman Imperial measurements to the beautiful, streamlined Metric standard.

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Inches to mm Converter

Decimal Inches:

Fraction:

Convert

Result in mm:

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Conversion History

Clear History

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Millimeters (mm)	Inches (") (decimal)	Inches (") (fraction)
0.01 mm	0.0004 ″	0 ″
0.1 mm	0.0039 ″	0 ″
1 mm	0.0394 ″	3/64 ″
2 mm	0.0787 ″	5/64 ″
3 mm	0.1181 ″	1/8 ″
4 mm	0.1575 ″	5/32 ″
5 mm	0.1969 ″	13/64 ″
6 mm	0.2362 ″	15/64 ″
7 mm	0.2756 ″	9/32 ″
8 mm	0.3150 ″	5/16 ″
9 mm	0.3543 ″	23/64 ″
10 mm	0.3937 ″	25/64 ″
20 mm	0.7874 ″	25/32 ″
30 mm	1.1811 ″	1 3/16 ″
40 mm	1.5784 ″	1 37/64 ″
50 mm	1.9685 ″	1 31/32 ″
60 mm	2.3622 ″	2 23/64 ″
70 mm	2.7559 ″	2 3/4 ″
80 mm	3.1496 ″	3 5/32 ″
90 mm	3.5433 ″	3 35/64 ″
100 mm	3.9370 ″	3 15/16 ″