AuraTimers
Tabata 45/15 × 10 Rounds Stopwatch
Tabata 45/15 × 10 Rounds Stopwatch online — fast, free, precise and ready instantly with alarms, big digits, ambient sounds and no signup.
Why use a stopwatch for HIIT?
A stopwatch with round counter lets you track total session time AND per-round splits, ideal for tabata-style intervals where ratios are fixed but total rounds vary.
How accurate is the round timing?
Millisecond-precision under the hood. Even on a 60-minute session the drift stays in the milliseconds.
Will the beeps cut through gym noise?
Yes — transition cues are tuned for loud environments and you can pick an alternative alarm in the sound library.
Do I need to install anything?
No. Open the URL on phone, tablet or TV browser and you are ready.