How to use it
Set work seconds, rest seconds and the number of rounds. Rest happens between work rounds, with no rest after the final round. A phase label and round counter show where you are in the sequence. Skip moves directly to the next phase; Reset returns to the start.
Try this example
Eight work rounds of 30 seconds with seven rests of 15 seconds take 345 seconds, or 5 minutes 45 seconds. A rest of zero creates consecutive work rounds. The timer stops at the end instead of looping indefinitely.
What to know
Only settings and sound preference are saved on this device. Reloading, closing this page or navigating to another tool ends the active session and clears laps. Keep the page open for timing. Fullscreen requires browser support; Escape exits it. No notification permission is requested.
Frequently asked questions
Can I pause between rounds?
Yes. Pause freezes the current phase and the remaining sequence. Resume continues from that point. Use Skip phase if you want to end the current phase early.
Keep this page open. Browser throttling, device sleep or muted audio can delay alerts. This is not a safety-critical alarm.