Photo Overlap Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the image footprint length and the distance between photos.
- Press Calculate.
- Read the overlap percentage.
How it works
Overlap = (1 − photo spacing ÷ footprint) × 100. Mapping usually targets ~70–80% front overlap.
Worked example
150 m footprint, 30 m spacing. = 80% overlap.
Frequently asked questions
How much overlap do I need?
Typically 75–80% front and 60–70% side for clean photogrammetry; more over forests, water and uniform surfaces.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.