Field of View & Crop Factor Calculator

Work out a camera lens's horizontal, vertical and diagonal angle of view from the focal length and sensor size, plus the crop factor and the 35 mm-equivalent focal length. Pick a sensor preset (full frame, APS-C, APS-C Canon, Micro 4/3, 1-inch, medium format) or enter custom sensor dimensions, set the focal length, and read off the field of view and how the lens 'feels' compared to full frame. Useful for camera/lens and videography planning. Pure trigonometry on a rectilinear (pinhole) projection — wide-angle distortion and fisheye projection aren't modelled. Everything runs locally in your browser.