Mil (thou) to Millimeter Converter
1 mil is exactly 0.0254 millimeters. Convert mils (mil) to millimeters (mm) below: type a value and the result updates as you type.
mil to mm calculator
Result
Mil (thou) to Millimeter conversion
1 mil = 0.0254 mmone mil in millimeters
1 mm ≈ 39.37007874 milone millimeter in mils
Mil (thou) (mil): One thousandth of an inch.
Millimeter (mm): One thousandth of a meter.
Source:Mil (thou): NIST Special Publication 811 (2008), Appendix B.8; Millimeter: SI Brochure, 9th edition (BIPM, 2019)
How to convert mils to millimeters
To convert mils to millimeters, multiply the number of mils by 0.0254.
Formula
mm = mil × 0.0254
Examples
- 5 mil = 5 × 0.0254 = 0.127 mm
- 25 mil = 25 × 0.0254 = 0.635 mm
- 100 mil = 100 × 0.0254 = 2.54 mm
Mil (thou) to Millimeter conversion table
| Mil (thou) (mil) | Millimeter (mm) |
|---|---|
| 0.1 mil | 0.00254 mm |
| 0.5 mil | 0.0127 mm |
| 1 mil | 0.0254 mm |
| 2 mil | 0.0508 mm |
| 3 mil | 0.0762 mm |
| 5 mil | 0.127 mm |
| 10 mil | 0.254 mm |
| 20 mil | 0.508 mm |
| 25 mil | 0.635 mm |
| 50 mil | 1.27 mm |
| 100 mil | 2.54 mm |
| 250 mil | 6.35 mm |
| 500 mil | 12.7 mm |
| 1000 mil | 25.4 mm |
Values rounded to 10 significant digits where needed.
Common conversions
Frequently asked questions
- How many millimeters are in one mil?
- One mil is exactly 0.0254 millimeters.
- How do I convert millimeters to mils?
- To convert millimeters to mils, divide the number of millimeters by 0.0254. The formula is mil = mm ÷ 0.0254.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 0.0254 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a mil or a millimeter?
- A millimeter is about 39.37007874 times larger than a mil. In other words, a mil is 0.0254 of a millimeter.