Length converter
MM to Inches Converter
Convert millimeters to inches for dimensions, product sizes, parts, and measurement checks.
Free Browser-only No sign-up Instant formula
US and Imperial volume units are different. Make sure you select the correct gallon, pint, or fluid ounce.
Length
Enter a number to convert.
Formula Formula appears here.
Calculation Calculation appears here.
Precision Auto
MM to Inches Formula
inches = millimeters ÷ 25.4
Example Conversions
| Input | Output |
|---|---|
| 1 mm | 0.0393700787 in |
| 10 mm | 0.3937007874 in |
| 100 mm | 3.937007874 in |
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Frequently Asked Questions
How many inches are in 1 mm?
1 millimeter equals 0.0393700787 inches.
How do I convert mm to inches?
Divide the millimeter value by 25.4.
Is this converter free?
Yes. This converter is free to use and does not require sign-up.
Are my values uploaded to a server?
No. The conversion runs in your browser. Values are not sent to a server.
Can I copy the result?
Yes. Use the copy buttons to copy the result, formula, or a shareable result with formula.