Ground Sample Distance (GSD) Calculator
Calculate ground sample distance from flight altitude, sensor size, and lens focal length for drone mapping and inspection.
Inputs
m
mm
mm
px
Results
Ground Sample Distance
2.74 cm/px
GSD27.41 mm/px
Ground Coverage Width150 m
Sensor Pixel Size0 mm
Altitude for 2cm GSD73 m
How to Use This Calculator
- Enter flight altitude (m AGL), camera sensor width (mm), and lens focal length (mm).
- Set image width (pixels) for your camera's horizontal resolution.
- Review ground sample distance (GSD) in cm/pixel and mm/pixel.
- Use the altitude-for-2cm-GSD output to plan the minimum flight altitude for mapping-grade accuracy.
- Lower GSD values mean higher resolution — reduce altitude or use a longer focal length to improve GSD.
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