HIIT 30 s / 15 s × 10 Timer

HIIT 30 s / 15 s × 10 preset: 30 s of work, 15 s of rest, 10 rounds. Press Start (or Space); you can still change the values before starting.

Thirty seconds of work with 15 seconds of rest is the most common HIIT ratio for beginners and intermediates: hard enough to raise the heart rate, with just enough rest to keep the form. Ten rounds take 7½ minutes.

1. Set work and rest – Type the work and rest time in seconds and the number of rounds, or pick a preset below. Tick “Repeat” for an endless loop.
2. Start – Click Start or press Space. The current phase and round number show above the clock, and a short beep sounds during the last 5 seconds of every phase.
3. Finish – After the last round the alarm chosen in Configure plays. Pause stops the countdown, Reset returns to the settings.

The timer keeps working in a background tab and after a page reload. Sounds are generated in the browser; in Configure you can pick the final alarm, your own file or a YouTube video. Shortcuts: Space start/pause, R reset, F full screen.

Frequently asked questions