Interval Timer
Plan a work-rest interval session with a full round schedule.
Quick answer: enter your details below and click Start Interval Plan — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Set the work seconds per round.
- Set the rest seconds between rounds.
- Choose the rounds and click Start Interval Plan.
About this tool
Enter a work length, a rest length, and a number of rounds, and the tool lays out every round with its total session time. In the browser, a live timer walks through the rounds while the page stays open. Total time is rounds times work, plus rest between rounds only — there is no rest after the final round.
Frequently asked questions
Does the live timer work if I close the page?
No. It runs only while the page stays open.
Can rest be zero?
Yes. Zero rest gives a continuous session of back-to-back work rounds.