Inches to Millimeters
Primary conversion
1 inch=25.4millimeters
1 in = 25.4 mm
Length
Result will appear here
Formula
millimeters = inches × 25.4
Multiply the number of inches by 25.4 to get the value in millimeters.
Reference Table
| Inches (in) | Millimeters (mm) |
|---|---|
| 1 | 25.4 |
| 2 | 50.8 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1270 |
| 100 | 2540 |
| 250 | 6350 |
| 500 | 12700 |
| 1000 | 25400 |
Frequently Asked Questions
How many millimeters are in 1 Inch?
1 Inch equals 25.4 millimeters.
How do you convert inches to millimeters?
Multiply the number of inches by 25.4 to get the value in millimeters. For example, 10 in = 254 mm.
What is the formula for inches to millimeters?
millimeters = inches × 25.4.
How do you convert millimeters back to inches?
Multiply millimeters by 0.03937 to get inches. 1 mm = 0.03937 in.