inches to mm – inches to mm – Instantly convert inches to millimeters using our free tool. Includes conversion formula, definitions, and a reference table.
About the Inches to Millimeters Conversion
Converting inches to millimeters is a standard requirement in precision engineering, manufacturing, and carpentry. While inches are common in the US, millimeters are the standard for detailed work globally. Use the calculator above for an instant answer. Below, you will find the logic behind the numbers.
Definitions
What is an Inch (in)?
An inch (symbol: in or ″) is a unit of length in the British imperial and United States customary systems. It is equal to exactly 25.4 millimeters.
What is a Millimeter (mm)?
A millimeter (symbol: mm) is a metric unit of length equal to one-thousandth of a meter. It is widely used for engineering and scientific applications where precision is key.
How to Convert Inches to Millimeters
The conversion between inches and millimeters is exact.
1 Inch = 25.4 Millimeters.
To convert inches to millimeters, you simply multiply the length value by 25.4.
Formula:Millimeters = Inches × 25.4
Example Calculation:
- Let’s say you have a length of 2.5 inches.
- Calculation: 2.5 × 25.4 = 63.5
- Result: 2.5 inches is equal to 63.5 millimeters.
Quick Conversion Table: Inches to MM
A reference list for common imperial lengths converted to millimeters.
| Inches (in) | Millimeters (mm) |
|---|---|
| 0.5 in | 12.7 mm |
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 5 in | 127.0 mm |
| 10 in | 254.0 mm |
| 12 in (1 foot) | 304.8 mm |
| 39.37 in (1 meter) | 1000 mm |