Free film calculators
for the people on set.
Quick calculators and short guides we built for our own shoots — the pay math, the focus math, the light math, and the on-set know-how behind them. Free to use, a lighter cousin of the apps we make.
Film crew overtime calculator
Straight time, time-and-a-half, double time and meal penalties from your rate and hours.
Open calculator → CameraDepth of field calculator
Near and far focus limits, total depth of field and hyperfocal distance for any format.
Open calculator → LightND filter calculator & chart
Filter to stops and density, plus the new shutter speed for long exposures.
Open calculator → CameraShutter angle calculator
Shutter angle and frame rate to shutter speed and exposure — the 180° rule, any angle.
Open calculator → DataVideo data rate calculator
Codec, resolution and frame rate to Mb/s and GB per hour — and how long a card lasts.
Open calculator → Film stockFilm footage calculator
Feet of 16mm, 35mm, 65mm or Super 8 to running time — and back. Frames per foot, any fps.
Open calculator → CameraField of view calculator
Horizontal, vertical and diagonal angle of view, and coverage at a distance.
Open calculator →Short reads for the set.
Plain-English explainers on the jobs and terms behind the tools.
Film crew overtime, explained
Straight time, overtime tiers, golden time and meal penalties — how a shoot day is paid.
Read guide → DirectingHow to storyboard on iPad
Shot sizes, camera moves, panels and animatics — boarding a sequence you can shoot from.
Read guide → DirectingBest storyboard app for iPad
An honest buyer's guide: the criteria that matter and where each kind of app fits.
Read guide → On-set rolesWhat a script supervisor does
Lining, take logging, continuity and the editorial handoff — the keeper of the cut.
Read guide → CameraWhat is a digital slate?
Sync, identification and the metadata that survives from the clap to the edit.
Read guide → PropsHow to show a phone screen in a film
Screen replacement, looped playback and cue-controlled prop phones — and what to watch for on set.
Read guide → PropsBest prop phone app for film
PropScreen, ScreenProp, PropCast and CueInsert compared on platforms, features and pricing.
Read guide → DataChecksum verification, explained
Why an unverified copy is not a backup — checksums, redundancy, MHL and safe-to-format.
Read on olycen.com →The apps do the heavy lifting.
These calculators are the quick version. The apps carry the whole job — Wrap Clock computes pay live from your real agreement, Set Math holds sixteen camera calculators, and DOPro puts them under a director's viewfinder.