The angle of view tells you how wide a slice of the world a lens captures, and it depends on both the focal length and the size of your sensor. This calculator uses the standard formula, angle equals two times the arctangent of the sensor dimension divided by twice the focal length, to give you the horizontal, vertical, and diagonal field of view in degrees. Enter your focal length and pick a sensor format, or type custom sensor dimensions, and you get all three angles instantly. A short focal length on a large sensor produces a wide sweeping view for landscapes and interiors, while a long focal length narrows the angle for portraits and wildlife. Knowing the exact angle helps you choose a lens for a scene, plan a panorama, or estimate coverage. Everything is calculated in your browser with nothing sent to a server.
The angle of view tells you how wide a slice of the world a lens captures, and it depends on both the focal length and the size of your sensor. This calculator uses the standard formula, angle equals two times the arctangent of the sensor dimension divided by twice the focal length, to give you the horizontal, vertical, and diagonal field of view in degrees.
Yes. Field of View Calculator is completely free, with no sign-up and no usage limits.
Yes. Field of View Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Field of View Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.