Photography Calculators
Photography math, made simple. Plan your shots before you ever pick up the camera. Every calculator runs in your browser, needs no account, and shows the formula behind its answer.
Depth of Field
Near and far focus limits for a given aperture and distance.
Hyperfocal Distance
The focus distance that maximizes depth of field.
Magnification
Reproduction ratio for macro photography.
Focus Stacking
Number of frames needed to cover a subject.
Diffraction
The aperture where diffraction limits sharpness.
Field of View
Angle of view for a sensor and focal length.
Focal Length to Angle
Convert focal length to angle of view, or back again.
Flash Exposure
Guide number based flash exposure.
Working Distance
Lens-to-subject distance at a given magnification.
Sensor Comparison
Compare sensor sizes and crop factors.
Equivalent Focal Length
Full-frame equivalent focal length and aperture.
Exposure Triangle
Equivalent exposure settings when you change aperture or ISO.
Star Trails (NPF Rule)
Maximum exposure time before stars start to trail.
ND Filter
New shutter speed after adding a neutral density filter.
Print Size
Maximum print size for your image resolution and DPI.
Handheld Shutter Speed
Slowest shutter speed you can shoot handheld without shake.
Time-Lapse
Frame count, video duration, and storage for a time-lapse.
Aspect Ratio Crop
Largest centered crop matching a target aspect ratio.