FDO Tools

Fire Direction Officer calculator for coordinate conversion, polar plots, and safety box calculations.

Available Tools

Polar Plot
Given a starting grid and a distance and direction, determine the target grid.
Grid to Grid
Determine the distance and direction between two grid locations.
Safety Box
Draw an arc at a given distance between two directions (e.g., left and right safety limits) and retrieve the min and max altitude in meters for computing the safety diagram.
Angle of Site
Calculate the vertical angle from weapon to target in mils, based on range and altitude difference.