Tabata timer
Tabata timer: 20 seconds work, 10 seconds rest, eight intervals, four minutes. Runs in your browser, free, with no sign-up and nothing to install.
Total 4:00
Warm-up and cool-down
The pattern
- Work
- 20 s
- Rest
- 10 s
- Intervals
- 8
- Get ready
- 10 s
- Total
- 4:00
Tabata is a fixed pattern: 20 seconds of work, 10 seconds of rest, eight times through. Eight work intervals and seven rests — four minutes once the ten-second countdown at the front is counted in. The numbers do not move; the shape is what the name refers to.
This page opens with those numbers already set, so the start is not a scramble. Change any of them and the link in the address bar changes with them.
How a run goes
- Press start. A ten-second countdown runs before the first work interval.
- Work for 20 seconds. The timer announces the change and counts the interval down.
- Rest for 10 seconds. A rest phase follows every work interval except the last one.
- Eight intervals in all. The strip above the clock shows how many are left.
What this timer does
An interval timer counts work and rest for you so you can stop counting and start moving. Set how long you work, how long you rest, and how many times — the timer handles the rest, calls every change out loud, and shows the whole session as a strip so you always know what is coming.
Time here is measured against the clock, not counted down by a ticker. Put the phone down, pick it up again, and the timer is exactly where it should be rather than a few seconds behind. That sounds like a detail until you have done eight rounds against a timer that drifted.
Every setting travels in the link. Copy the address bar and you have shared your session — no account on either end.
One thing a browser cannot do
When your screen switches off, or you leave this tab, the browser stops the audio. The clock still comes out right when you return, but you will not have heard the beeps in between. We ask the browser to keep the screen awake where it can, and we tell you when it cannot — because a tool that names its limit is more useful than one that hides it.