Convert mils to mm
Mils to millimeters. Enter a value to convert, or use the mils to mm chart further down the page.
1 mil equals 0.0254 millimeters. Going the other way, 1 millimeter = 39.37007874 mils.
How to convert mils to mm
To convert mils to millimeters, multiply the mil value by 0.0254. You can also divide by 39.37007874 to get the same answer.
mm = mil × 0.0254
Worked example
Convert 15 mil to millimeters:
15 mil = 0.381 mm
mils to mm conversion chart
Use this mils to mm table for quick reference without typing anything.
| mils (mil) | millimeters (mm) |
|---|---|
| 0.01 mil | 0.000254 mm |
| 0.1 mil | 0.00254 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 |
| 50 mil | 1.27 mm |
| 100 mil | 2.54 mm |
| 1,000 mil | 25.4 mm |
What is a mil?
A mil, or thou, is one thousandth of an inch. It is the standard unit for sheet thickness, plating depth and printed-circuit-board trace widths in the US.
What is a millimeter?
The millimeter is a metric unit equal to one thousandth of a meter. It is the smallest unit marked on a standard metric ruler and is the working unit of engineering drawings, machining tolerances and rainfall measurement.
Frequently asked questions
How many mm are in a mil?
1 mils equals 0.0254 mm. Going the other way, 1 mm is 39.37007874 mils.
How do you convert mils to mm?
To convert mils to millimeters, multiply the mil value by 0.0254. You can also divide by 39.37007874 to get the same answer.
What is 10 mils in mm?
10 mils equals 0.254 mm. The conversion chart on this page lists the other values people look up most often.
Related length conversions
Convert mils to other units
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- nanometers to mm
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