Interval Timer
Alternate work and rest periods automatically. Use the Tabata preset (20s work / 10s rest × 8) or set your own intervals.
Total 04:00
00:20
How to use
- Pick a preset or enter work time, rest time and number of rounds.
- Press Start. A short countdown gives you time to get ready.
- Listen for the beeps: a high tone for work, a low tone for rest, and three short beeps before every change.
Popular uses
- Tabata (20/10 × 8)
- HIIT and circuit training
- Running intervals and sprint repeats
- Study sprints with short breaks
Frequently asked questions
What is a Tabata workout?
Tabata is 8 rounds of 20 seconds of maximum effort followed by 10 seconds of rest, which takes 4 minutes in total.
Can I use it with my screen off?
The timer keeps time in the background, but phones may silence browser audio when locked. While it runs, the page asks the device to keep the screen on.
Can I set different rest times?
Enter any work and rest duration in seconds and choose up to 99 rounds.
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