Estimate How Far You Can See Your Drone

Select Drone

Warning: Estimate based on visual acuity - actual range will depend on other factors including weather conditions and background clutter


The standard definition of normal visual acuity (20/20 vision) is the ability to resolve a spatial pattern separated by a visual angle of 1 arc minute (1/60 of a degree).

Visual angle is calculated as the angle between the max points of the drone at a given distance and altitude. This app calculates the size of the viewing plane of a drone (given the drone's horizontal and vertical dimensions) to find the distance and altitude that corresponds to 1 arc minute (maximum distance of human acuity), 3 arc minutes (recommended maximum distance) and 6 arc minutes (generally safe distance)