How to use Inches to MM Converter
- Enter a value in inchesType the number of inches. The result in millimeters updates as you type.
- Convert both waysType in either field. The other one updates, so you can also turn millimeters into inches.
- Check the chartUse the chart below the converter for common values, rounded to two decimals.
Common uses
- Convert a height, screen size or furniture measurement
- Read product sizes from shops in other countries
- Check measurements for DIY and craft projects
Frequently asked questions
How do I use Inches to MM Converter?
1. Enter a value in inches: Type the number of inches. The result in millimeters updates as you type. 2. Convert both ways: Type in either field. The other one updates, so you can also turn millimeters into inches. 3. Check the chart: Use the chart below the converter for common values, rounded to two decimals.
How do I convert inches to millimeters?
Multiply the value in inches by 25.4. For example, 1 in = 25.4 mm.
What is 1 inch in millimeters?
1 in is 25.4 mm, and 1 mm is 0.0394 in.
Are inches and feet defined exactly in metric units?
Yes. Since 1959 one inch is exactly 2.54 cm and one foot, which is 12 inches, is exactly 0.3048 m.