For photographers

Plan the clip before you shoot

A pocket calculator for interval, event duration, clip length, and playback FPS. Set the intervalometer with numbers you can trust — not after you have already filled a card.

Open the web planner

Timelapse Tool launch screen on iPhone: Plan the clip before you shoot

Timelapse Tool home screen on iPhone: Clip length, Shot interval, Event duration, and Frames per second

Four solvers

Clip length, shot interval, event duration, or playback FPS. Pick the unknown; the rest stay locked to integer frames.

Live output preview

Watch interval, frame count, clip length, and disk estimate update as you type — then feel the shoot and the playback.

Card space

See the frame count and estimated stills on disk before the intervalometer starts. Short clips and huge cards get a warning.

iPhone app

Solve it, then save the setup

Clip length calculator: 5 second interval, 1 hour event, 30 frames per second, 10 MB still size — Clip lengthFrom interval and event

Shot interval calculator: 1 minute clip, 1 hour event, 30 frames per second, 10 MB still size — Shot intervalFrom clip length and event

Event duration calculator: 5 second interval, 1 minute clip, 30 frames per second, 10 MB still size — Event durationFrom interval and clip

Frames per second calculator: 5 second interval, 1 minute clip, 1500 frames, 10 MB still size — Frames per secondFrom frames and clip

Results sheet with the equation, a solved event duration of 2 hours 30 minutes, 1800 frames, and 17.57 GB of stills — ResultsEquation and the solved value

Save Setup sheet over the results, with a name field reading Pier at dusk — Save setupName the plan

History list with Navy Pier and Swim Start Night setups — HistoryReopen a saved plan

Navy Pier setup detail: 1 minute interval, 6 hour event, 12 second clip, 360 frames, 3.51 GB — SetupThe saved numbers

Sign in sheet with Sign in with Apple and Sign in with Google, over the home screen — Sign inSave setups to your account

Plain-language summary

Every 5s for 2h → 1,440 frames → 48s at 30 FPS

Use it in the browser, or on iPhone

Timelapse Tool plans the clip. It does not capture photos. Bring your own camera.

Open Timelapse Tool