Stopwatch for HIIT and Interval Workouts
Time your high-intensity intervals, rest periods, and circuit workouts with precision and lap recording.
Keyboard: Space start/stop · L lap · R reset
Fitness tips
For Tabata workouts (20s work / 10s rest × 8 rounds), use the lap button after each work or rest phase to track interval consistency.
The fastest/slowest lap highlighting shows whether your intensity is dropping over rounds — useful for tracking endurance improvement over weeks.
Use the keyboard shortcut Space to start/stop without taking your hand off the mat. Great for floor exercises where you can't easily touch your phone.
Copy your laps after a workout to log to a fitness journal or spreadsheet. The tab-separated format pastes cleanly into Google Sheets or Excel.
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