Circles to Mils (NATO) Converter
Enter the angle in circles below to get the value converted to mils.
Result in Mils:
Do you want to convert mils to circles?
How to Convert Circles to Mils
Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.
To convert a measurement in circles to a measurement in mils, multiply the angle by the following conversion ratio: 6,400 mils/circle.
Since one circle is equal to 6,400 mils, you can use this simple formula to convert:
mils = circles × 6,400
The angle in mils is equal to the angle in circles multiplied by 6,400.
How Many Mils Are in a Circle?
There are 6,400 mils in a circle, which is why we use this value in the formula above.
1 cir = 6,400 mil
Circles and mils are both units used to measure angle. Keep reading to learn more about each unit of measure.
What Is a Circle?
A circle is the equivalent of 1 revolution around a circle, or 360°.
A circle is sometimes also referred to as a revolution. Circles can be abbreviated as cir; for example, 1 circle can be written as 1 cir.
A circle is more commonly used to describe a round, symmetrical shape with no corners or edges than it is to describe plane angle. The shape is described by its radius and circumference.
Learn more about circles.
What Is a Mil?
A mil, short for milliradian, is equal to 1/6,400 of a circle. The mil used by the US military and NATO forces is slightly different than the true value of a milliradian, which is equal to 1/6,283 of a circle.
During World War I the US adopted what is now the NATO mil to replace degrees and minutes for use in artillery sights. They opted to round mils to 6,400 per circle for simplicity at the time. Today, the mil is commonly used to measure adjustment of sights and scopes of firearms.
There is rightfully much confusion as a result of the mil adopted by the US military and NATO being slightly different than the milliradian.
A mil is sometimes also referred to as an angular mil. Mils can be abbreviated as mil; for example, 1 mil can be written as 1 mil.
Learn more about mils.
Circle to Mil Conversion Table
| Circles | Mils (NATO) |
|---|---|
| 0.001 cir | 6.4 mil |
| 0.002 cir | 12.8 mil |
| 0.003 cir | 19.2 mil |
| 0.004 cir | 25.6 mil |
| 0.005 cir | 32 mil |
| 0.006 cir | 38.4 mil |
| 0.007 cir | 44.8 mil |
| 0.008 cir | 51.2 mil |
| 0.009 cir | 57.6 mil |
| 0.01 cir | 64 mil |
| 0.02 cir | 128 mil |
| 0.03 cir | 192 mil |
| 0.04 cir | 256 mil |
| 0.05 cir | 320 mil |
| 0.06 cir | 384 mil |
| 0.07 cir | 448 mil |
| 0.08 cir | 512 mil |
| 0.09 cir | 576 mil |
| 0.1 cir | 640 mil |
| 0.2 cir | 1,280 mil |
| 0.3 cir | 1,920 mil |
| 0.4 cir | 2,560 mil |
| 0.5 cir | 3,200 mil |
| 0.6 cir | 3,840 mil |
| 0.7 cir | 4,480 mil |
| 0.8 cir | 5,120 mil |
| 0.9 cir | 5,760 mil |
| 1 cir | 6,400 mil |