Interval Timer
A timer made for interval workouts like Tabata and HIIT. Set the work and rest times and number of rounds, and it repeats automatically with a beep when each stage changes.
Get ready
00:20
Round 1 / 8
How to use
- Set the work, rest, rounds, and prep time in seconds.
- Press "Start" and, after the prep, work and rest repeat automatically.
- A beep sounds when the stage changes, and "Reset" starts over from the beginning.
Frequently asked questions
How do I set up Tabata?
Set work to 20 seconds, rest to 10 seconds, and rounds to 8 for standard Tabata. The defaults are already set to Tabata.
Does it keep running if the screen turns off?
It calculates the remaining time from the real clock, so it stays accurate even if you switch tabs. However, the sound may not play if the device goes to sleep.
Where does the sound come from?
The browser generates the beep itself. It works without any file or server, and the sound turns on once you press start the first time.