Image Footprint Calculator
Computes the ground area covered by a single image from GSD and pixel dimensions.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the GSD and the image width and height in pixels.
- Press Calculate.
- Read the ground footprint of one image.
How it works
Ground footprint = (GSD ÷ 100) × image pixels, for each dimension; the area is width × height.
Worked example
2 cm/px, 5472 × 3648 px. ≈ 109 m × 73 m on the ground.
Frequently asked questions
What's footprint used for?
It feeds overlap, line spacing and image-count planning for a drone mapping mission.
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- Drone GSD Calculator
- Drone Image Count Calculator
- Drone Flight Line Spacing Calculator
- Flight Altitude from GSD Calculator
- Photo Overlap Calculator
- Photogrammetry Accuracy Estimate Calculator
Explore more in Surveying, Coordinates, GIS & CAD.
Cite this tool
Zerdly. (2026). Image Footprint Calculator. Retrieved from https://www.zerdly.com/tools/image-footprint-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.