How to use MM to Inches
- Type a value in millimeters.
- The result in inches appears instantly.
- Type in the second box to convert the other way.
How to convert millimeters to inches
Multiply the value in millimeters by 0.03937. Formula: in = mm ÷ 25.4. Example: 10 mm × 0.03937 = 0.393701 in.
Common millimeters to inches conversions
5 mm = 0.19685 in. 25 mm = 0.984252 in. 50 mm = 1.9685 in. 100 mm = 3.937 in.
Where is mm to in conversion used?
Length conversions come up constantly when metric and imperial systems meet: checking your height for a visa or medical form, comparing screen and TV sizes, buying furniture or clothes from another country, reading product dimensions on international shopping sites, and following DIY or engineering drawings.
What are millimeters?
A millimeter is one thousandth of a meter. It is used for small, precise measurements like screw sizes, rainfall and phone thickness.
What are inches?
An inch is exactly 2.54 centimeters by international agreement. It is used in the US and UK for screens, height and small dimensions.
Millimeters to inches conversion table
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 | 0.03937 |
| 2 | 0.07874 |
| 3 | 0.11811 |
| 4 | 0.15748 |
| 5 | 0.19685 |
| 6 | 0.23622 |
| 7 | 0.275591 |
| 8 | 0.314961 |
| 9 | 0.354331 |
| 10 | 0.393701 |
| 12 | 0.472441 |
| 15 | 0.590551 |
| 20 | 0.787402 |
| 25 | 0.984252 |
| 30 | 1.1811 |
| 50 | 1.9685 |
| 75 | 2.9528 |
| 100 | 3.937 |
Frequently asked questions
How many inches are in 1 millimeter?
1 millimeter = 0.03937 inches (1 mm = 0.03937 in).
How many millimeters are in 1 inch?
1 inch = 25.4 millimeters (1 in = 25.4 mm).
What is 10 mm in inches?
10 mm = 0.393701 in.
What is 100 mm in inches?
100 mm = 3.937 in.
Is the mm to in conversion exact?
Yes. Since 1959 the inch has been defined as exactly 2.54 cm, so every imperial–metric length factor (inch, foot, yard, mile) is exact. Results here are rounded only for display.
Last updated: · Free to use, no sign-up.