Mils to Inches (mil to in) Converter

How to convert mils to inches

Formulain = mil × 0.001

Multiply the value in mils by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).

A mil is smaller than an inch: it takes 1,000 mils to make one inch.

Worked examples

1 mil (thou)1 mil × 0.001 = 0.001 in
5 mils5 mil × 0.001 = 0.005 in
10 mils10 mil × 0.001 = 0.01 in
20 mils20 mil × 0.001 = 0.02 in
100 mils100 mil × 0.001 = 0.1 in

Mils to inches conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Mils to inches: 0.1–10 mil
Mils (mil)	Inches (in)
0.1 mil	0.0001 in
0.25 mil	0.00025 in
0.5 mil	0.0005 in
1 mil	0.001 in
2 mil	0.002 in
3 mil	0.003 in
4 mil	0.004 in
5 mil	0.005 in
6 mil	0.006 in
7 mil	0.007 in
8 mil	0.008 in
9 mil	0.009 in
10 mil	0.01 in

Mils to inches: 12–1,000 mil
Mils (mil)	Inches (in)
12 mil	0.012 in
15 mil	0.015 in
20 mil	0.02 in
25 mil	0.025 in
30 mil	0.03 in
40 mil	0.04 in
50 mil	0.05 in
75 mil	0.075 in
100 mil	0.1 in
250 mil	0.25 in
500 mil	0.5 in
1,000 mil	1 in

About the units

Mil (mil)

One thousandth of an inch (0.0254 mm). Used for plastic-film and coating thickness and machining tolerances. One mil equals 0.0000254 meters (m).

Inch (in)

A US customary and imperial unit defined as exactly 25.4 mm since 1959. Twelve inches make a foot. Screen sizes, tire diameters and lumber dimensions are usually given in inches. One inch equals 0.0254 meters (m).

Frequently asked questions

How many inches are in one mil?

There are 0.001 inches in one mil, and this value is exact by definition.

How do I convert mils to inches?

Multiply the number of mils by 0.001. For example, 10 mil × 0.001 = 0.01 in.

How many mils are in one inch?

One inch equals 1,000 mils. That is the reverse factor, 1 ÷ 0.001.

What is 10 mils in inches?

10 mil = 0.01 in.

Is this mil to in converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Mils to Inches Converter