What is the Tabata protocol?

It is a high-intensity interval training format of 20 seconds of maximum-effort work followed by 10 seconds of rest, repeated for 8 rounds, for a 4-minute total workout. It comes from research by Dr. Izumi Tabata.

Can I change the work and rest durations?

Yes. Adjust the work seconds, rest seconds, and number of rounds before starting. The timer supports any custom interval, not just the classic 20/10 protocol.

Does the timer make sound?

Yes, toggle sound on to hear beeps during the last 3 seconds of each phase and a longer signal when the phase changes from work to rest or rest to work.

Will the timer keep running if I switch tabs?

The countdown is based on elapsed time, not a simple tick counter, so it stays accurate even if the browser throttles a background tab. The display catches up as soon as you return to the tab.

Can I pause mid-workout?

Yes. The Pause button freezes the countdown exactly where it is. Press Resume to continue from that same point in the same phase.

Tabata Timer

Run a Tabata-style interval workout with configurable work/rest durations and round count, plus start, pause, and reset controls.

Workout Settings

Work (seconds)

Rest (seconds)

Rounds

Sound cues

Total workout time: 3:50

Ready

0:05

Round 0 / 8

Summary

This Tabata timer alternates work and rest intervals for a set number of rounds, defaulting to the classic 20 seconds work / 10 seconds rest / 8 rounds protocol. Adjust the durations and round count for any interval training format, then start, pause, or reset the countdown as needed. A short "get ready" countdown and optional audio cues help keep you on pace without watching the screen.

How it works

Set the work duration, rest duration, and number of rounds (defaults to the classic 20s/10s x 8).
Click Start; a short "Get Ready" countdown gives you time to get into position.
The timer alternates WORK and REST phases automatically, counting down each round.
Pause anytime to freeze the countdown, then resume from the exact same point.
When all rounds finish, the timer shows a completion message; click Reset to run it again.

Use cases

Time high-intensity interval training (HIIT) sessions at the gym or at home.
Run the classic Tabata protocol: 20 seconds work, 10 seconds rest, 8 rounds.
Customize work, rest, and round count for circuit training, boxing rounds, or EMOM workouts.
Use as a visual countdown during group fitness classes.
Track round progress without checking a phone during a workout.
Time interval-based tasks outside fitness, like structured study or cooking steps.

Frequently Asked Questions

Last updated: 2026-09-11 · Reviewed by Nham Vu