mm → in
Millimeters to Inches Converter
1 millimeter (mm) is equal to 0.0394 inches (in). To convert millimeters to inches, multiply the millimeter value by 0.03937007874.
Millimeters to inches is the precision conversion behind hardware sizes, jewelry, camera lenses and 3D printing. One inch equals exactly 25.4 millimeters, so divide millimeters by 25.4 — a 10 mm bolt is about 0.394 in.
How to convert millimeters to inches
inches = millimeters × 0.03937007874
Millimeters to Inches conversion table
| millimeters (mm) | inches (in) |
|---|---|
| 1 | 0.0394 |
| 2 | 0.0787 |
| 3 | 0.1181 |
| 5 | 0.1969 |
| 6 | 0.2362 |
| 10 | 0.3937 |
| 12.7 | 0.5 |
| 20 | 0.7874 |
| 25.4 | 1 |
| 50 | 1.9685 |
| 100 | 3.937 |
| 300 | 11.811 |
Frequently asked questions
How many inches are in a millimeter?
There are 0.0394 inches in 1 millimeter. Multiply any millimeter value by 0.03937007874 to get the equivalent in inches.
What is 6 mm in inches?
6 mm equals 0.2362 in. You can verify this with the interactive converter above — the result updates instantly as you type.
What is the formula to convert millimeters to inches?
inches = millimeters × 0.03937007874. For example, 25.4 mm × 0.03937007874 = 1 in.
Can I measure something in millimeters without a tape measure?
Yes — Scale for Grams' Size mode estimates an object's height, width and depth in centimeters from a single photo using computer vision. It works free in the browser at scaleforgrams.com with no account required.
Scale for Grams
Don't know the millimeter value? Weigh it with a photo.
Scale for Grams estimates any object's weight from a single photo and shows it in grams, kilograms, pounds and ounces at once — free, in your browser.
Try the photo scale