Convert Arc Seconds (") to Mils
1 arc second equals 0.00493827 mils.
Arc Second to Mil Converter
How to Convert Arc Second to Mil
1 arc second = 0.00493827 mils
Mil = Arc Second × 0.00493827
Example: 1" × 0.00493827 = 0.00493827 mil
Reverse Conversion
To convert mils back to arc seconds:
- Remember, 1 mil equals 202.5 arc seconds.
- To convert 0.00493827 mil to", multiply
0.00493827 x 202.5, resulting in1".
Common Arc Second to Mil Conversions
| Arc Second | Mil | Actions |
|---|---|---|
| 1 arc second | 0.00493827 mils | |
| 5 arc seconds | 0.0246914 mils | |
| 10 arc seconds | 0.0493827 mils | |
| 25 arc seconds | 0.123457 mils |
| Arc Second | Mil | Actions |
|---|---|---|
| 50 arc seconds | 0.246914 mils | |
| 100 arc seconds | 0.493827 mils | |
| 500 arc seconds | 2.46914 mils | |
| 1000 arc seconds | 4.93827 mils |
Arc seconds to mils Conversion Table
Reference table with common arc seconds to mils conversions. All values calculated with high precision.
Arc Seconds to Mils Table
1000 to 1 × 108
Mils to Arc Seconds Table
1 to 100000
Definition of Mil
- Definition
The mil is a military angular unit used in ballistics, optics, and range estimation.
In the NATO system, a full circle is divided into 6400 mils.
- Exact factor
- 1 turn = 6400 mil
- Examples
- 100 mil ≈ 5.625°
- 1 mil ≈ 0.0009817 rad
About the Mil
Facts & Uses
- NATO mil = 1/6400 of a full circle ≈ 0.05625° ≈ 0.000982 rad. Used by NATO militaries for artillery aiming and rifle scope adjustment.
- Standard in military ballistics, artillery fire control, and precision long-range shooting (mil-dot reticles on rifle scopes).
- Convenient because 1 mil ≈ 1 m at 1000 m distance — making angular size to range estimation simple in the field.
- Different national militaries use slightly different mil definitions: NATO/US 6400 mils per circle, Soviet/Warsaw Pact 6000 mils, Sweden 6300 mils.
Curiosities
- The "true milliradian" is exactly 1/1000 rad = 1/(2000π) of a circle ≈ 6283 mils per circle. The NATO mil was rounded to 6400 for easier mental arithmetic.
- A rifle scope with 0.1 mil clicks moves the point of impact 1 cm at 100 m, or 10 cm at 1000 m — the precision standard for tactical optics.
- The mil-dot reticle uses dots spaced 1 mil apart, allowing shooters to estimate target range by knowing the target size: range (m) = target size (m) × 1000 / mils.
- Approximate equivalents: 1 NATO mil ≈ 0.05625° ≈ 3.375 arcminutes ≈ 0.000982 rad.
Sources
Frequently Asked Questions
How many mils are in one arc second?
One arc second equals 0.00493827 mils. To convert, multiply the arc second value by 0.00493827. For the reverse, divide the mil value by 0.00493827 (or multiply by 202.5).
What is 100 arc seconds in mils?
100 arc seconds = 0.49383 mils. This is one of the most commonly searched conversions for this pair.
How precise is the arc second-to-mil conversion?
The factor 0.00493827 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert Mil to Arc Second
