Field of View Calculator

Calculate the horizontal, vertical, and diagonal field of view for any focal length and sensor size.

Results

Visualization

How It Works

Field of view is the angular extent of the scene captured by a lens. It depends on focal length and sensor size: FOV = 2 * arctan(sensor_dimension / (2 * focal_length)). A 50mm lens on full frame gives about 40 degrees horizontal, close to human vision. Wider lenses (14-24mm) capture 75-104 degrees, while telephotos (200mm+) narrow to under 10 degrees. Crop sensors see a narrower FOV at the same focal length.