Panorama Overlap Calculator

About this calculator

Stitching software like Hugin, PTGui, or Lightroom's panorama merge relies on finding matching features between adjacent frames, so each shot in a panorama sequence needs to share a meaningful overlap with its neighbor — typically 20–30% of the frame width — or the stitcher has nothing to align on and produces visible seams or outright failures.

Given your lens's horizontal field of view and your chosen overlap percentage, the number of shots needed to cover a target angle (up to a full 360°) is roughly the coverage angle divided by the effective step per shot, FOV × (1 − overlap), rounded up. This calculator does that arithmetic so you can plan a shooting sequence — wider lenses and lower overlap need fewer frames, but push overlap too low and stitching quality suffers.