Convert Micrometers (μm) to Mils (thousandths of an inch)
Enter a value below to convert Micrometers (μm) to Mils (thousandths of an inch).
Conversion:
1 Micrometers (μm) = 0.03937007874 Mils (thousandths of an inch)
How to Convert Micrometers (μm) to Mils (thousandths of an inch)
1 um = 0.03937007874 mil
1 mil = 25.4 um
Example: convert 15 Micrometers (μm) to Mils (thousandths of an inch):
25 um = 0.9842519685 mil
Micrometers (μm) to Mils (thousandths of an inch) Conversion Table
| Micrometers (μm) | Mils (thousandths of an inch) |
|---|---|
| 0.01 um | 0.0003937007874 mil |
| 0.1 um | 0.003937007874 mil |
| 1 um | 0.03937007874 mil |
| 2 um | 0.07874015748 mil |
| 3 um | 0.11811023622 mil |
| 5 um | 0.1968503937 mil |
| 10 um | 0.3937007874 mil |
| 20 um | 0.7874015748 mil |
| 50 um | 1.968503937 mil |
| 100 um | 3.937007874 mil |
| 1000 um | 39.37007874 mil |
Micrometers (μm)
Definition
A micrometer (μm), also called a micron, is a metric unit of length equal to one millionth of a meter (10⁻⁶ m).
History
The micrometer gained prominence in the 19th century with the development of precision optics and microscopy. The term 'micron' was officially revoked by the SI in 1967, though it remains in common use.
Current use
Micrometers are used in biology (cell sizes: 1–100 μm), materials science (thin film thickness), manufacturing (surface roughness), and air quality measurement (PM2.5 refers to particles ≤2.5 μm).
Mils (thousandths of an inch)
Definition
A mil (also called a thou) is an imperial unit of length equal to one thousandth of an inch (0.001 in or approximately 0.0254 mm).
History
The mil originated in manufacturing and engineering in English-speaking countries as a practical unit for measuring very thin materials. The name 'thou' derives from 'thousandth of an inch'.
Current use
Mils are used in manufacturing for measuring wire diameter, sheet metal thickness, printed circuit board (PCB) trace widths, paint and coating thickness, and plastic film thickness.