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Stopwatch for HIIT and Interval Workouts

Time your high-intensity intervals, rest periods, and circuit workouts with precision and lap recording.

Hakuna kuingia kinachohitajika
00:00.00
Ready

Keyboard: Space start/stop Β· L lap Β· R reset

Fitness tips

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For Tabata workouts (20s work / 10s rest Γ— 8 rounds), use the lap button after each work or rest phase to track interval consistency.

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The fastest/slowest lap highlighting shows whether your intensity is dropping over rounds β€” useful for tracking endurance improvement over weeks.

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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.

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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.

Jinsi Inavyofanya Kazi

1
Ingiza
Enter your data into the tool above. Everything stays local to your browser.
2
Chakata
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Pakua
Get your result instantly. Nothing is stored after you leave the page β€” complete privacy.

Kwa nini utumie yetu?

βœ“Bure kabisa β€” bila gharama zilizofichwa, kamwe
βœ“Hakuna akaunti, barua pepe, au kuingia kinachohitajika
βœ“Faili hazitoki kwenye kifaa chako kamwe
βœ“Hakuna kikwazo cha ukubwa wa faili kabisa
βœ“Hakuna alama za maji kwenye matokeo yoyote

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