Convert Millimeters to Inches

1 mm = 0.03937 in. Divide the length in millimeters by 25.4 to get inches.

Millimeters mm
Inches in
Formula: 1 mm = 0.03937 in
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How to Convert Millimeters to Inches

Divide the length in millimeters by 25.4 to get inches.

Common Millimeters to Inches Values

Millimeters (mm) Inches (in)

Frequently Asked Questions

How many mm is 1 inch?
One inch equals exactly 25.4 millimeters. This is an exact definition, not an approximation.
What is 10mm in inches?
10 millimeters equals 0.3937 inches, just under 13/32 of an inch.
When do I need mm to inches conversion?
Common uses include converting socket wrench sizes between metric and SAE, reading engineering drawings, and converting rain gauge measurements.