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⏱️ Stopwatch
Start, pause, and reset a precise stopwatch for tasks, workouts, and speed-runs.
Stopwatch
Simple stopwatch with laps and keyboard shortcuts: Space to start/pause, L to log a lap, R to reset.
Designed for focus sessions
The stopwatch runs entirely in the browser so your timing is not affected by network hiccups. Start and pause with the big action button or use the keyboard shortcuts to keep your hands on the keyboard while pair programming, recording workouts, or tracking lab experiments.
Spacetoggles the timer without clicking.Lcaptures a lap while the clock is running.Rresets everything for your next measurement.
Common workflows
- Time Pomodoro intervals without leaving your browser tab.
- Track athlete sprint splits or rowing intervals with laps.
- Measure automated test suites or deployment steps.
Accuracy notes
Timing uses requestAnimationFrame for smooth updates and stores the absolute start timestamp to prevent drift. Pausing keeps the elapsed value intact so you can resume without losing precision.
For high-frequency instrumentation (millisecond logging or electronics work), pair this stopwatch with hardware timers that provide sub-millisecond guarantees.
FAQ
- Can I export lap times?
- Copy laps directly from the page or use the browser print dialog to save a PDF record once your session is complete.
- Does it keep running in the background?
- Yes. As long as the tab remains open, the stopwatch continues counting even if you switch apps—great for timing builds or uploads.
- Is there an alarm?
- This tool focuses on simple tracking. For countdowns with alerts, pair it with the dedicated Countdown timer available on ToolHop.
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