Interval Timer

Set repeating work and rest intervals for exercise or study.

Runs in your browser

Interval Timer

Set repeating work and rest intervals for exercise or study.

Work (1–3600 Seconds)

Rest (0–3600 Seconds)

Rounds (1–100)

Include rest after the final round

Rest may be zero for consecutive work periods. Final rest is optional. Settings stay fixed while running and paused; reset to edit them.

00:00:00

Ready

Enable sound

Before you start

Timers work while this page stays open and your device stays awake. Closing or refreshing clears the timer. Background operation or sleep can delay updates and alerts; do not rely on a browser alarm for an essential alert. Test sound before starting.

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