Free CCTV Design Tool · 2026

CCTV Lens & FOV Calculator

Calculate horizontal, vertical and diagonal field of view, coverage at distance, pixels per metre and DORI detection distances for any IP camera lens.

Camera & Lens Settings
Common focal lengths
For tilt angle estimate
e.g. person = 1.7m
Results
Configure lens and click Calculate

Sensor dimensions follow CCTV industry standards. FOV = 2·arctan(sensor_dim / 2·focal_length). DORI per EN 62676-4.
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