Mils to km Converter

How to convert mils to kilometers

Formulakm = mil × 2.54×10⁻⁸

Multiply the value in mils by 2.54×10⁻⁸. To go the other way, multiply by 39,370,078.74 (or divide by 2.54×10⁻⁸).

A mil is smaller than a kilometer: it takes 39,370,078.74 mils to make one kilometer.

Worked examples

1 mil (thou)1 mil × 2.54×10⁻⁸ = 2.54×10⁻⁸ km
5 mils5 mil × 2.54×10⁻⁸ = 1.27×10⁻⁷ km
10 mils10 mil × 2.54×10⁻⁸ = 2.54×10⁻⁷ km
20 mils20 mil × 2.54×10⁻⁸ = 5.08×10⁻⁷ km
100 mils100 mil × 2.54×10⁻⁸ = 0.00000254 km

Mils to kilometers conversion table

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

Mils to kilometers: 0.1–10 mil
Mils (mil)	Kilometers (km)
0.1 mil	2.54×10⁻⁹ km
0.25 mil	6.35×10⁻⁹ km
0.5 mil	1.27×10⁻⁸ km
1 mil	2.54×10⁻⁸ km
2 mil	5.08×10⁻⁸ km
3 mil	7.62×10⁻⁸ km
4 mil	1.016×10⁻⁷ km
5 mil	1.27×10⁻⁷ km
6 mil	1.524×10⁻⁷ km
7 mil	1.778×10⁻⁷ km
8 mil	2.032×10⁻⁷ km
9 mil	2.286×10⁻⁷ km
10 mil	2.54×10⁻⁷ km

Mils to kilometers: 12–1,000 mil
Mils (mil)	Kilometers (km)
12 mil	3.048×10⁻⁷ km
15 mil	3.81×10⁻⁷ km
20 mil	5.08×10⁻⁷ km
25 mil	6.35×10⁻⁷ km
30 mil	7.62×10⁻⁷ km
40 mil	0.000001016 km
50 mil	0.00000127 km
75 mil	0.000001905 km
100 mil	0.00000254 km
250 mil	0.00000635 km
500 mil	0.0000127 km
1,000 mil	0.0000254 km

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).

Kilometer (km)

One thousand metres. Kilometres measure road distances and running races in most countries; a 10K race is 10 km, about 6.2 miles. One kilometer equals 1,000 meters (m).

Frequently asked questions

How many kilometers are in one mil?

There are 2.54×10⁻⁸ kilometers in one mil, and this value is exact by definition.

How do I convert mils to kilometers?

Multiply the number of mils by 2.54×10⁻⁸. For example, 10 mil × 2.54×10⁻⁸ = 2.54×10⁻⁷ km.

How many mils are in one kilometer?

One kilometer equals 39,370,078.74 mils. That is the reverse factor, 1 ÷ 2.54×10⁻⁸.

What is 10 mils in kilometers?

10 mil = 2.54×10⁻⁷ km.

Is this mil to km 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.