HIIT Timer
Maximum effort for 40 seconds, breathe for 20. Eight rounds with prep included.
This HIIT timer alternates 40 seconds of effort and 20 of rest for8 rounds, with 5 seconds of prep before the first sprint. The rhythm is guided by the sound at every phase change.
How to follow
- In the effort phase, give the maximum you can keep up for the round.
- In the rest phase, walk or recover your breathing.
- Use focus mode (fullscreen) so you do not watch the time the whole time.
Short on time? Try the tabata (4 minutes) or adjust the rounds in the settings.
Frequently asked questions
What is HIIT?
HIIT (high-intensity interval training) alternates short bursts of maximum effort with rest. A common example: 40 seconds of effort and 20 of rest, repeated in rounds.
How long does a HIIT session last?
A classic session with 8 rounds of 40×20 lasts about 8 minutes, not counting the prep. Shorter workouts (4 minutes, tabata style) also deliver great results.
More time tools
Timers by duration
Ready-made countdowns
Pick a time — and start.