Calculator

Field of view calculator

Horizontal, vertical and diagonal angle of view and the scene width covered at any distance.

Sensor width mm Sensor height mm Focal length mm Subject distance m

Horizontal · vertical · diagonal—

Scene covered at distance—

Full-frame equivalent—

How it works#

Angle of view = 2·atan(d ÷ 2f), where d is the sensor dimension. Scene width at distance D ≈ sensor width × (D − f) ÷ f.

Last updated October 03, 2026 · How we calculate · Sources