Micron ↔ Mil Converter
Convert film and coating thickness both ways. 1 mil = 25.4 microns.
Existing conversion example: 50 microns ÷ 25.4 gives 1.9685 mil, matching the converter's current default fields.
Micron to mil
A mil is one thousandth of an inch; a micron (µm) is one thousandth of a millimetre. Film and packaging specs use both, so converting matters when comparing suppliers or datasheets. 1 mil = 25.4 µm. Microns → mil: divide by 25.4. Mil → microns: multiply by 25.4.
Trade, packaging and shipping
Compare film and coating specifications in international trade and packaging for shipping. For example, 50 µm is about 1.9685 mil. A mil is 0.001 inch, not a millimetre. This conversion changes the thickness unit only: it does not calculate film strength, tolerance or shipment mass. Use the film weight calculator with area and density when you need mass.
Common film-thickness conversions
1 mil = 25.4 µm exactly. Mil values are rounded to four decimal places.
| Microns (µm) | Mil |
|---|---|
| 10 | 0.3937 |
| 12 | 0.4724 |
| 20 | 0.7874 |
| 25.4 | 1.0000 |
| 50 | 1.9685 |
| 75 | 2.9528 |
| 100 | 3.9370 |
| 127 | 5.0000 |
| 250 | 9.8425 |
Related tools
Measuring tools
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Micron and mil questions
How do I convert microns to mil?
Divide the thickness in microns by 25.4 to get mil. A mil is one thousandth of an inch, while a micron is one thousandth of a millimetre. The converter applies this fixed relationship to film and coating thickness; keep the original measurement precision when comparing specifications from different suppliers.
- Identify whether the specified thickness is in microns or mil.
- Divide microns by 25.4, or multiply mil by 25.4.
- Compare the converted thickness while retaining the measurement's original precision.
| Conversion | Existing relationship |
|---|---|
| Mil to microns | 1 mil = 25.4 µm |
| Existing default thickness | 50 µm = 1.9685 mil |
How do I convert mil to microns?
Multiply the thickness in mil by 25.4 to get microns. This is the reverse of the micron-to-mil conversion and uses the same fixed factor. Enter the thickness in the mil field to update microns. The unit conversion alone does not determine film weight, material density or the tolerance on a supplier specification.
Is micron to millitorr the same as micron to mil?
This converter handles film and coating thickness in microns and mil, both units of length. It does not convert a pressure reading to millitorr. Check which physical quantity the specification describes before entering a value; a shared word or abbreviation does not make a pressure conversion equivalent to a thickness conversion.