Convert mm to inches
Convert mm to inches instantly in your browser. 1 mm = 0.03937 inches.
How to use
- 1
Enter the value
Type the number of mm you want to convert.
- 2
Read the result
The equivalent in inches is calculated instantly in your browser.
Technical details
To convert mm to inches, multiply the value by 0.03937. To convert back, multiply inches by 25.4.
This converter uses the exact internationally defined ratio, so results are accurate for both everyday and technical work. The reference table below shows common mm values converted to inches.
Reference table
| mm | inches |
|---|---|
| 1 mm | 0.03937 inches |
| 2 mm | 0.07874 inches |
| 5 mm | 0.19685 inches |
| 10 mm | 0.393701 inches |
| 25 mm | 0.984252 inches |
| 50 mm | 1.968504 inches |
| 100 mm | 3.937008 inches |
Frequently asked questions
How many inches are in one mm?
One mm equals 0.03937 inches.
What is the formula to convert mm to inches?
Multiply the number of mm by 0.03937 to get inches.
Is this conversion exact?
Yes. It uses the exact defined relationship between mm and inches, not a rounded approximation.
Reviewed by:Easy Converter Engineering Team
This tool was tested and calibrated by our engineering team. All processing happens locally in your browser — your files and data never leave your device.
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