Stopwatch & Countdown Timer
Track lap splits, log sprint intervals, or run quick countdowns for meetings and workouts in one lightweight tool.
Stopwatch
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Lap splits appear here while the stopwatch is running.
All-in-one stopwatch and timer for your browser
Use the stopwatch to capture split times during usability tests, workout intervals, or lab experiments. Lap entries stack instantly, showing both total time and the delta since the last mark so you can gauge pace without exporting data. Need a countdown instead? Switch tabs, set a custom duration, and launch a distraction-free timer without downloading an app.
Presets cover quick syncs and focus bursts, while manual inputs help you schedule longer sessions. Combine this tool with the Pomodoro Timer for longer deep-work cycles or pair it with the Time Converter when converting durations across formats.
Stopwatch playbook
- Start the stopwatch, then press Lap to capture split times without stopping the clock.
- Keep the tab open during demos or tests; the timer keeps accurate time in the background.
- Reset clears the clock and laps so you can begin a new run instantly.
Countdown quick tips
- Configure hours, minutes, or seconds, then press Set duration before starting.
- Pause to adjust plans, or tap a preset to reset for recurring meetings.
- Need to coordinate across time zones? Compare end times with the World Clock Planner.
Example workflow
Run a 30-minute sprint review: start a 10-minute countdown for demos, pause for questions, then switch to the stopwatch to log action-item discussions and capture how long each topic took.
FAQ highlights
Can I export laps? Copy totals manually today; CSV export is on the roadmap, so share your use case in feedback.
Will alarms play when the countdown ends? This lightweight release focuses on visual timing. Audio alerts and notifications are planned next.

