STOPWATCHREADY
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Online Stopwatch
Keyboard: Space = start/pause · L = lap · R = reset
Laps
Press Lap while the stopwatch is running to record splits.
| # | Lap time | Total |
|---|
How It Works
Press Start to begin counting from zero. Press Pause to stop the clock and Resume to continue from the same time. Lap records the time since the previous lap without stopping the stopwatch, and Reset clears the time and all laps.
The stopwatch stores the moment it started rather than counting ticks, so the time stays exact even if the page is in a background tab. The current run is saved in your browser, so a refresh will not lose it. Keyboard shortcuts: Space to start or pause, L to record a lap, R to reset.
With two or more laps, the fastest and slowest are highlighted so you can compare splits at a glance.
Frequently Asked Questions
How accurate is the online stopwatch?
It shows hundredths of a second and measures time from real timestamps, so it does not drift when the tab is in the background.
Can I record lap times?
Yes. Press Lap while the stopwatch is running. Each lap shows its own time and the running total; the fastest and slowest laps are highlighted.
Will I lose the time if I refresh the page?
No. The current run and laps are saved in your browser and restored when you come back.