Millimeters to Inches
Enter a value in Millimeters and get the result in Inches instantly.
1 mm = 0.03937 in
How to convert Millimeters to Inches
Multiply the number of Millimeters by 0.03937 to get Inches. To go the other way, divide by that same number instead.
Millimeters to Inches conversion table
| Millimeters | Inches |
|---|---|
| 1 mm | 0.03937 in |
| 2 mm | 0.07874 in |
| 3 mm | 0.11811 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.393701 in |
| 20 mm | 0.787402 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.937 in |
Metric and imperial length
The metric system builds every length unit from the meter: 1 km is 1,000 m, 1 cm is one hundredth of a meter. Imperial units relate to each other in twelves and thousands instead — 12 inches to a foot, 3 feet to a yard, 1,760 yards to a mile. The bridge between the two systems is exact: 1 inch is defined as precisely 2.54 cm.
Common questions
How many inches are in 1 mm?
One mm equals 0.03937 in. Multiply any number of millimeters by 0.03937 to get the same amount in inches.
How do I convert millimeters to inches quickly?
For a rough figure in your head, round 0.03937 to the nearest easy number and adjust. Use the converter above when the exact value matters.
Is this conversion exact?
The ratio between millimeters and inches is a fixed, defined value, so the conversion is exact. Results are rounded for display only.