Tabata Timer

Run the classic Tabata shape of twenty seconds of work and ten seconds of rest for eight rounds.

Run a Tabata session

Work seconds Rest seconds Rounds

Warm up seconds Sound cues

Phase: Ready

Countdown: —

Round: — · Total left: —

Session length: —

The classic Tabata shape is 20 seconds of work and 10 seconds of rest for 8 rounds, which is 4 minutes of work and rest.

Leave the defaults for a classic Tabata set of twenty seconds on and ten seconds off.
Adjust the work, rest, round count or warm up to match your own session.
Press Start to begin, pause when you need to, and reset to run the set again.

Common questions about the free online tabata timer.

Tabata is a high intensity interval protocol of twenty seconds of work and ten seconds of rest repeated for eight rounds, four minutes in total.

Eight rounds of twenty seconds of work and ten seconds of rest add up to exactly four minutes, plus any warm up you choose to add.

Yes. Both fields accept any length from one second upwards, and the round count can be set anywhere from one to twenty.

The warm up counts down before round one so you can get into position. Set it to zero if you would rather start immediately.

Yes. A tone sounds at the end of every work and rest phase, and the sound cues check box switches the tones off.

The countdown is calculated from the system clock each time it refreshes, so a busy browser cannot make the timer drift.

Yes. Pause stops the countdown and the same button resumes it from the exact point you left, or press Reset to start over.

No. Any exercise you can do in place works, such as squats, press ups, burpees, mountain climbers or jumping jacks.

Yes. Everything runs in your browser with no network requests, so the timer keeps working anywhere.

Last updated: October 10, 2026