7 free photography calculators. All run locally in your browser — no account required.
Depth of Field Calculator
Near/far focus limits, total DoF, and hyperfocal distance. Includes a live focus zone diagram.
↳ 50mm · f/2.8 · 3m → DoF 0.43m
ND Filter Calculator
Calculate the new shutter speed for any ND filter. Or reverse it — enter a target exposure and find the filter you need.
↳ 1/500s + ND64 → 1/8s
Shutter Count Checker
Upload a photo to read the shutter actuation count from its EXIF data. Supports Nikon, Sony, Fujifilm, and Pentax. File never leaves your device.
↳ Drop a JPEG · read actuations instantly
Crop Factor Calculator
Convert focal lengths and apertures across sensor sizes. See how any lens behaves on Full Frame, APS-C, and Micro 4/3 side by side.
↳ 35mm on APS-C → 52.5mm equiv.
Golden Hour Calculator
Find golden hour, blue hour, sunrise, and sunset times for any location and date. Includes a live sun arc diagram.
↳ London · Jun 21 → golden at 21:08
Hyperfocal Distance Table
Full hyperfocal distance reference table for any sensor and focal length. Sweet-spot apertures highlighted. Printable.
↳ 35mm · f/8 · FF → 10.2m hyperfocal
Print Size Calculator
Find the maximum print size your photo can handle at a given DPI. Includes a quality rating from wallet to billboard.
↳ 24MP @ 300 DPI → 38 × 25 cm