Four solvers
Clip length, shot interval, event duration, or playback FPS. Pick the unknown; the rest stay locked to integer frames.
Free web planner
Plan the clip before you shoot
A pocket calculator for photographers. Set the intervalometer with numbers you can trust — not after you have already filled a card.
Live calculator
Clip length
Solve clip length from interval and event
Live output preview
Watch interval, frame count, clip length, and disk estimate update as you type — then feel the shoot and the playback.
Save plans
Keep a history of setups. Reopen a sunset or a build and send the same numbers back to the calculator.
Plain-language summary
Every 5s for 2h → 1,440 frames → 48s at 30 FPS
On this device
Saved plans
No saved plans yet. Calculate a setup and tap Save plan.
Ready on iPhone
Timelapse Tool plans the clip. It does not capture photos. Bring your own camera.
Download on the App Store