Convert Inches to Millimeters
Enter the value in inches to get its exact equivalent in millimeters instantly.
How to convert inches to millimeters?
To transform a measurement from inches (in) to millimeters (mm), multiply the value by the exact conversion factor of 25.4. The formula is:
$$\text{mm} = \text{inches} \times 25.4$$
The international inch was standardized in 1959 as exactly 25.4 millimeters. This unit is essential in industrial sectors, tool sizing, and electronic components.
|
Inches (in) |
Millimeters (mm) |
|---|---|
|
1 |
25.40 |
|
5 |
127.00 |
|
10 |
254.00 |
|
50 |
1270.00 |
|
100 |
2540.00 |
Related Conversions
Frequently Asked Questions (FAQ)
How many millimeters are in 1 inch?
There are exactly 25.4 millimeters in one international inch.
How much is 1/2 inch in mm?
It is 12.7 millimeters, calculated by multiplying 0.5 by 25.4.