Set Math: Film Calculator

The camera calculator built for the set. 23 tools, fully offline, free, and designed to give you the answer at a glance — even at 3am on a night exterior. Set Math is made for cinematographers, camera assistants, DITs and gaffers who need a number now and need to trust it. NEW IN 3.0 • A complete redesign: one big answer per tool, and the result stays above the keyboard while you type • Night mode: red on black, so the screen doesn't ruin anyone's night vision • Film Footage: running time, film needed and roll remaining, Super 8 to IMAX • Film gate sizes in every lens tool: Super 8, 16mm, Super 16, Academy, 2-, 3- and 4-perf 35, VistaVision, 65mm and IMAX • Six new tools: Flicker-Free Shutter, Anamorphic, Shot Size, Diopter, Battery Runtime and Power Load • Drop-frame timecode at 29.97 and 59.94 EXPOSURE • ND Calculator — stops, filter factor and optical density • Shutter Calculator — shutter angle and frame rate to shutter speed • Flicker-Free Shutter — safe angles under 50 and 60 Hz light • Exposure Triangle — equivalent ISO, aperture and shutter • EV / Lighting — what moving a light costs you in stops • Aperture / T-Stop — f-stop to T-stop and light loss • Color Temperature — Kelvin, mired and the gel that gets you there LENS • Depth of Field — near and far limits, any sensor or film gate • Hyperfocal Distance • Field of View — horizontal, vertical and diagonal coverage • Crop Helper — full-frame equivalents • Shot Size — how far back for a close-up, medium or wide • Diopter — focus range with close-up diopters FRAME • Aspect Ratio — letterbox, pillarbox and crop • Anamorphic — desqueezed ratio, crop to delivery and lens equivalents • Frame Rate — slow motion and time-lapse speed • Timecode — add, subtract, convert, drop-frame PRODUCTION • Film Footage — film length, running time and rolls • Data Rate — codec bitrate and storage per shoot day • Runtime — script pages to screen time and shoot days • Battery Runtime — Wh, draw and batteries per day • Power Load — amps, circuits and generator size • Unit Converter BUILT FOR WORK • Works fully offline, no account, no tracking • Favorites, custom tool order and hidden tools • History of every calculation; share or copy any result • Light, Dark and Night appearances • iPhone and iPad Free. No ads. No subscription.