Length Converter
MM to Inches
Convert millimeters to inches below — handy for screws, screen bezels, jewelry and engineering drawings.
Convert millimeters to inches
0.393701
1 cm = 0.393701 in
| Unit | 1 cm = |
|---|---|
| Millimeters | 10 mm |
| Centimeters | 1 cm |
| Meters | 0.01 m |
| Kilometers | 0.00001 km |
| Inches | 0.393701 in |
| Feet | 0.032808 ft |
| Yards | 0.010936 yd |
| Miles | 0.000006 mi |
| Nautical miles | 0.000005 nmi |
How to convert millimeters to inches
There are 25.4 millimeters in an inch, so divide your millimeter value by 25.4 to get inches.
Example: an M8 bolt 8 mm wide is 8 ÷ 25.4 = 0.315 inches, close to the 5/16" imperial size.
Millimeters to inches table
| Millimeters | Inches |
|---|---|
| 1 mm | 0.039 in |
| 5 mm | 0.197 in |
| 10 mm | 0.394 in |
| 20 mm | 0.787 in |
| 25 mm | 0.984 in |
| 50 mm | 1.969 in |
| 100 mm | 3.937 in |
Common millimeter values in inches.
Frequently asked questions
How many inches is 1 mm?
One millimeter is about 0.0394 inches. Divide millimeters by 25.4 to convert to inches.
What is 10 mm in inches?
10 mm equals 10 ÷ 25.4 = 0.394 inches, just under four tenths of an inch.
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