Instant & Free Length Calculator
Millimeters to Inches Converter
Convert millimeters to inches with precision.
mm
in
Calculation: 1 mm = 0.03937 in
Formula: in = mm / 25.4
About Millimeters to Inches Conversion
Millimeters are the standard engineering unit for machining, screws, wrenches, and 3D printing. Converting mm to fractional and decimal inches ensures correct tool and fastener fit.
How to calculate manually:
To convert millimeters to inches, divide the number of millimeters by 25.4.
Millimeters to Inches Conversion Table
| Millimeters (mm) | Inches (in) | Action |
|---|---|---|
| 1 mm | 0.03937 in | |
| 2 mm | 0.07874 in | |
| 5 mm | 0.19685 in | |
| 10 mm | 0.393701 in | |
| 12 mm | 0.472441 in | |
| 15 mm | 0.590551 in | |
| 20 mm | 0.787402 in | |
| 25.4 mm | 1 in | |
| 50 mm | 1.968504 in | |
| 75 mm | 2.952756 in | |
| 100 mm | 3.937008 in |
Frequently Asked Questions (Millimeters to Inches)
How many mm in 1 inch?
There are exactly 25.4 millimeters in 1 inch.
What is 10 mm in inches?
10 mm is approximately 0.3937 inches.