05:00
Work
Rest
Rounds
Date
Time
Time is up
Turning this on asks your browser for permission once.
Paste that anywhere HTML is allowed. Free to use, no attribution required.
The countdown is anchored to a finish time, so it stays exact even if the tab is in the background. Press Test sound once so the browser lets audio play. Space starts and pauses, L takes a lap, R resets.
Tabata is a fixed protocol: twenty seconds of maximum effort, ten seconds of rest, eight rounds, four minutes in total. This page opens at exactly those numbers.
Pick one movement and hold it for the whole four minutes. The work cue is deliberately sharp so you can hear it over your own breathing.
A free online timer, stopwatch and countdown clock that runs entirely in your browser. No account, nothing to install.
It keeps working offline once loaded, and you can add it to your home screen like an app. Your settings stay in your own browser.
Press Voice control and allow microphone access, then speak normally. Your speech is handled by your browser's own speech service, and nothing is stored by this page. Allow the microphone once and switch this on once, and it stays on as you move around the whole site, in this tab or a new one. It switches itself off after an hour of not being used. The button always shows whether it is listening, and tapping it stops it for good.
Those are the intervals from the original study the protocol is named after. The short rest is the point, since it never lets you fully recover.
Yes. The Work, Rest and Rounds boxes are editable, so you can move to 30/15 or 40/20 without leaving the page.