Angle of Site Calculator

Calculate the vertical angle from weapon to target in mils.

Angle of Site (SI) is the vertical angle from the weapon to the target, expressed in mils. A positive value indicates the target is above the weapon; a negative value indicates the target is below.

Range (meters)

Weapon Altitude (m)

Target Altitude (m)

Formula Reference

SI = (VI / (R / 1000)) × 1.0186

Where:

SI = Angle of Site (mils)
VI = Vertical Interval (Target Alt - Weapon Alt) in meters
R = Range (horizontal distance) in meters
1.0186 = Mil Relation Factor