Free online Tabata timer for high-intensity interval training. Customize work/rest intervals, track rounds, with audio cues and visual countdown. No signup needed.
The Tabata Timer follows the classic Tabata protocol developed by Dr. Izumi Tabata: 20 seconds of intense exercise followed by 10 seconds of rest, repeated for 8 rounds (4 minutes total). This high-intensity interval training (HIIT) method is scientifically proven to improve both aerobic and anaerobic fitness. Our timer provides audio and visual cues to keep you on track during your workout.
The Tabata protocol is a form of high-intensity interval training (HIIT) consisting of 20 seconds of intense exercise followed by 10 seconds of rest, repeated 8 times for a total of 4 minutes. It was developed by Dr. Izumi Tabata and is proven to improve both aerobic and anaerobic capacity.
Yes! You can adjust work duration (10–60 seconds), rest duration (5–30 seconds), and the number of rounds (1–20) to match your fitness level and workout goals.
No. The Tabata Timer is completely free and works instantly in your browser with no signup required.
Yes, once the page is loaded, the timer runs entirely in your browser using JavaScript — no internet connection is needed during your workout.
Audio cues help you stay focused on your exercise without constantly looking at the screen. You will hear a beep when work starts, when rest starts, and a final completion tone.