Group Analyzer

Measure group size and mean radius from a target photo. Works best with a reference object, like a ruler or 1″ grid, in the photo for calibration.

How it works

1 Upload a photo of your target
2 Calibrate the scale using a reference object (ruler, quarter or grid)
3 Mark each shot by clicking the centre of the bullet holes
4 Get results including group size, mean radius and MOA
5 Download an annotated image to save or share

Required

Your photo must include a reference object of known size (a 1″ grid, US quarter or ruler) to calibrate measurements. Without it, group size cannot be calculated accurately.