Tabata timer 30/15 x 8
30 sec work, 15 sec rest, 8 rounds. 5 min 55 sec total. Starts with a 10 sec get-ready count.
Space start/pause R reset Esc stop
Settings
30 sec work, 15 sec rest, 8 rounds. 5 min 55 sec total. Starts with a 10 sec get-ready count.
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What this one is for
Thirty on, fifteen off keeps the 2:1 ratio of classic Tabata but gives you a long enough work block to get real reps in. Six minutes total, which is about the point where a single exercise starts to feel like a decision you regret.
It suits movements where 20 seconds is over before you find a rhythm: rowing, skipping, kettlebell swings, shadow boxing. Fifteen seconds is enough to shake out your arms and not much more.
Eight rounds by default. Bump it to 10 or 12 in the settings if you are using this as a full session rather than a finisher.
02
Good for
- Rowing or ski erg intervals
- Skipping rope, where 20 seconds is barely a warm-up
- Bodyweight circuits with one move per round
- Shadow boxing rounds with a short breather
03
How it runs
30 sec work, 15 sec rest, 8 rounds. 5 min 55 sec total. Starts with a 10 sec get-ready count. Press Start, or hit Space. The digits turn green while a work block runs and grey on rest.
Sound is on by default: a rising pair for work, a falling pair for rest, a tick for the last three seconds and a three-note finish. Mute with the speaker button. The screen stays on while the timer runs and the tab title shows the time left.
Change anything in Settings under the timer. The last setup you used on this page is remembered in your browser.
Questions people ask
- Is 30/15 still Tabata?
- Strictly, no. Tabata is 20/10 x 8. But 30/15 uses the same 2:1 work-to-rest ratio and most gyms call anything in that shape a Tabata. The timer does not care what you call it.
- Should I do the same exercise every round?
- Either works. Same exercise every round is harder and closer to the original idea. Rotating two or four exercises lets you go heavier per round because each pattern gets more rest.
- How do I change it to 30/15 x 12?
- Open Settings under the timer and change Rounds to 12. The change is saved in your browser for next time.