Millimeters to Inches Converter
Need to convert millimeters to inches fast? You're in the right place. Use the converter below to instantly get results, see conversion formulas, and check popular values – all in one place.
Want to convert inches to millimeters instead? Try our inches to mm converter.
How to Convert mm to inches
To convert millimeters to inches, divide the number of millimeters by 25.4. This is because one inch equals exactly 25.4 millimeters.
Formula: inches = millimeters ÷ 25.4
Example: 10 mm ÷ 25.4 = 0.3937 in
Millimeters to Inches Conversion Table
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 mm | 0.03937 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.3937 in |
| 15 mm | 0.59055 in |
| 20 mm | 0.7874 in |
| 25 mm | 0.98425 in |
| 30 mm | 1.1811 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.937 in |
What is a Millimeter?
A millimeter (mm) is a unit of length in the metric system. It equals one thousandth of a meter. Millimeters are commonly used to measure very small distances, such as the thickness of a credit card or the diameter of a wire.
What is an Inch?
An inch (in) is a unit of length in the imperial and US customary systems. One inch equals exactly 25.4 millimeters. Inches are commonly used in the United States and other countries that haven't adopted the metric system.
FAQ – Millimeters to Inches
- How many inches is 1 mm?
- 1 mm is approximately 0.03937 inches.
- How do you convert 10 mm to inches?
- Divide 10 by 25.4. The result is approximately 0.3937 inches.
- Is 1 inch exactly 25.4 mm?
- Yes, by international agreement, 1 inch is defined as exactly 25.4 mm.
- Can I use this converter on mobile?
- Yes! This converter is mobile-friendly and works on any device.
- Is this tool free?
- Absolutely. You can use this converter as much as you like – it's completely free.
Looking to convert the other way? Try our inches to millimeters converter.