Convert Mils to Arc Seconds (")
1 mil equals 202.5 arc seconds.
Mil to Arc Second Converter
How to Convert Mil to Arc Second
1 mil = 202.5 arc seconds
Arc Second = Mil × 202.5
Example: 1 mil × 202.5 = 202.5"
Reverse Conversion
To convert arc seconds back to mils:
- Remember, 1 arc second equals 0.00493827 mils.
- To convert 202.5" to mil, multiply
202.5 x 0.00493827, resulting in1 mil.
Common Mil to Arc Second Conversions
| Mil | Arc Second | Actions |
|---|---|---|
| 1 mil | 202.5 arc seconds | |
| 5 mils | 1012.5 arc seconds | |
| 10 mils | 2025 arc seconds | |
| 25 mils | 5062.5 arc seconds |
| Mil | Arc Second | Actions |
|---|---|---|
| 50 mils | 10125 arc seconds | |
| 100 mils | 20250 arc seconds | |
| 500 mils | 101250 arc seconds | |
| 1000 mils | 202500 arc seconds |
Mils to arc seconds Conversion Table
Reference table with common mils to arc seconds conversions. All values calculated with high precision.
Mils to Arc Seconds Table
1 to 100000
Arc Seconds to Mils Table
1000 to 1 × 108
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 arc seconds are in one mil?
One mil equals 202.5 arc seconds. To convert, multiply the mil value by 202.5. For the reverse, divide the arc second value by 202.5 (or multiply by 0.00493827).
What is 10 mils in arc seconds?
10 mils = 2025 arc seconds. This is one of the most commonly searched conversions for this pair.
How precise is the mil-to-arc second conversion?
The factor 202.5 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert Arc Second to Mil
