A free online Tabata timer for HIIT workouts — customizable 20/10 interval rounds, audio cues and a big visual countdown. No signup, no ads, works on phone and desktop.
The Tabata protocol is a high-intensity interval training (HIIT) method developed by Dr. Izumi Tabata. The classic format: 20 seconds of maximum effort followed by 10 seconds of rest, repeated for 8 rounds (4 minutes total). This timer helps you maintain perfect timing during your workout sessions.
Note: Voice theme may not work in all browsers. Use Simple or Countdown for reliable audio.
Streaming your workout? Use obstimer.com for a transparent countdown overlay in OBS.
Streaming your workout? Use obstimer.com for a transparent OBS overlay.
Yes. The Tabata timer is free to use online with no signup. Optional Premium adds unlimited saved programs, extra preset workouts and custom themes.
The classic Tabata protocol is 20 seconds of maximum effort followed by 10 seconds of rest, repeated for 8 rounds — 4 minutes total. You can customize work time, rest time, and rounds.
Set your work, rest, and round counts using the inputs below the timer, then press Start. The large circular countdown and audio cues keep you on pace, hands-free.
Yes, and it's free. Set your work, rest and rounds, then save it as a named program to reuse any time — no signup. Streaming your workout? obstimer.com does transparent OBS overlays.