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Wndsn Range Calculator

High-precision range calculator. Companion to Wndsn Telemeters: Low tech, high utility graphical distance & altitude computers from the Wndsn applied science lab.

By way of using a Wndsn Quadrant or Telemeter measuring degrees or a hairline graticule measuring mil or moa or any other instrument or technique that returns the angular size of a known object, we can determine the distance to that object.

Calculate range.

The angular relationship between height and distance.

Input

Determine distance d (use any unit (cm, mm, inches, etc.) for s, at angular size α)
Reset

Explanation

[Load sample values (JSON) (XML) (CSV).]

Compare MIL vs. MRAD vs. NATO-MIL.

Use the Range Calculator to convert MRAD ⇄ MIL ⇄ MOA

  1. Pick the angular unit:
    • For NATO-MILs set unit to NATO-MIL.
    • For ballistic work set unit to MIL (MRAD) or MOA.
  2. Enter the known angular size:
    • The calculator will show equivalent values in degrees, MRAD, NATO-MIL, and MOA.
  3. Round the result:
    • Adjust the display precision in the URL.

Reference

1        rad =  57.3     deg
6.2832   rad = 360       deg = 6,283.2   mil = 6,400     natomil = 21,600     minutes (moa)
0.017453 rad =   1       deg =    17.453 mil =    17.778 natomil =     60     minutes (moa)
                 0.0573  deg =     1     mil =     1.019 natomil =      3.438 minutes (moa)
                 0.05625 deg =     0.982 mil =     1     natomil =      3.375 minutes (moa)

Radian, degrees, mrad, NATO-MIL, and MOA.


See also