Millimeters to Inches
Convert Millimeters to Inches with an exact factor. One millimeter equals 0.03937008 Inches.
Result0.03937008
How to convert Millimeters to Inches
The converter above changes Millimeters into Inches instantly. As a reference point, one millimeter corresponds to 0.03937008 Inches, and one inch corresponds to 25.4 Millimeters. Use the table below for common values.
Millimeters × 0.03937008 = Inches
For example, 5 Millimeters = 0.19685039 Inches.
About the units
- Millimeters (mm) — One thousandth of a metre.
- Inches (in) — Exactly 2.54 cm, used in the US, UK and for screens.
Millimeters to Inches conversion table
| Millimeters | Inches |
|---|---|
| 1 mm | 0.03937008 in |
| 2 mm | 0.07874016 in |
| 3 mm | 0.11811024 in |
| 4 mm | 0.15748031 in |
| 5 mm | 0.19685039 in |
| 10 mm | 0.39370079 in |
| 15 mm | 0.59055118 in |
| 20 mm | 0.78740157 in |
| 25 mm | 0.98425197 in |
| 50 mm | 1.96850394 in |
| 100 mm | 3.93700787 in |
| 500 mm | 19.68503937 in |
| 1,000 mm | 39.37007874 in |
Inches to Millimeters conversion table
| Inches | Millimeters |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 4 in | 101.6 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 15 in | 381 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 50 in | 1,270 mm |
| 100 in | 2,540 mm |
| 500 in | 12,700 mm |
| 1,000 in | 25,400 mm |
Frequently asked questions
How many Inches is one millimeter?
One millimeter is 0.03937008 Inches.
Are these length conversions accurate?
Yes. They use the exact standard unit definitions, so results are accurate to the number of decimals shown.
What is the formula to convert Millimeters to Inches?
Multiply the number of Millimeters by 0.03937008. To convert back, multiply Inches by 25.4.
This tool is provided for general information only. Verify important figures independently. · Last reviewed: August 25, 2026