10 photography calculators.
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Near, far and total depth of field from focal length, aperture, distance and sensor.
Hyperfocal distance for maximum depth of field, by focal length, aperture and sensor.
Angle of view and frame width from focal length and sensor size.
35mm-equivalent focal length and aperture for any sensor crop factor.
Exposure value from aperture, shutter and ISO, plus scene light value.
New shutter speed after an ND filter, by stops or filter number.
Flash distance or aperture from guide number and ISO.
Frames, clip length and storage for a time-lapse shoot.
Longest shutter before star trails, by focal length and crop factor.
Print size from pixels and DPI, or the pixels a print needs.
A set of photography calculators for shooting and planning: depth of field, hyperfocal distance, field of view, crop factor and equivalent focal length, exposure value, ND filter long exposures, flash guide number, time-lapse, the 500 rule for star photography, and print size versus resolution. Standard optics maths, all running in your browser.
They use the standard optics formulas: the hyperfocal and depth-of-field equations, angle of view from sensor size, the exposure-value definition, guide-number geometry and the 500 rule. Results are exact for the model; real lenses vary slightly with focus breathing and marked-versus-actual focal length.
Full frame, APS-C (1.5x and Canon 1.6x), Micro 4/3 and 1-inch, with a custom crop factor where it applies. The depth-of-field and 500-rule tools use standard circle-of-confusion and crop values for each.
No. Every calculator runs entirely in your browser with no download, sign-up, or data leaving your device.
Depth of field, hyperfocal distance, field of view, crop factor, exposure value, ND filter, flash guide number, time-lapse, the 500 rule and print size / DPI.