Inch to Millimeter Converter
1 in = 25.4 mm
1 Inch=25.4 Millimeter
In real life, that's about...
Inch → Millimeter
| Inch | Millimeter |
|---|---|
| 1 | 25.4 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1270 |
| 100 | 2540 |
Formula
mm = in x 25.4
in = mm x 0.03937
Conversion Factor
1 Inch = 25.4 Millimeter
1 Millimeter = 0.03937 Inch
Step-by-Step Example
- 1
Start with the value in Inch
10 in - 2
Multiply by the conversion factor 25.4
10 x 25.4 - 3
Result: 10 in = 254 mm
1 Inch is equal to 25.4 Millimeter. To convert Inch to Millimeter, multiply the value by 25.4.
The formula is: mm = in x 25.4. You can also divide the in value by 0.03937 to get the same result.
1 Millimeter is equal to 0.03937 Inch. This is the inverse of the Inch to Millimeter conversion.
The conversion factor used is 1 Inch = 25.4 Millimeter. For most practical purposes, this provides highly accurate results. Our converter uses standard internationally recognized conversion factors.
To convert Millimeter to Inch, multiply the Millimeter value by 0.03937. Or use our converter above and click the swap button.
{from} to {to} Conversion Table
| in | mm |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 50 in | 1270 mm |
| 100 in | 2540 mm |
| 250 in | 6350 mm |
| 500 in | 12700 mm |
| 1000 in | 25400 mm |