Online Stopwatch
Time anything to the hundredth of a second, with lap splits that highlight your fastest and slowest laps. Big, clear digits and keyboard shortcuts make it easy to use mid-task.
00:00.00
Keyboard: Space to start/stop · L to lap · R to reset
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How to use online stopwatch
- 1Press Start (or the Space bar) to begin timing.
- 2Press Lap (or L) to record a split while the stopwatch keeps running.
- 3Press Stop to pause, then Resume to continue or Reset (R) to clear.
About this tool
The stopwatch measures time from your device's high-resolution clock rather than counting ticks, so it stays accurate even if you switch tabs — browsers slow down timers in background tabs, but the elapsed time is always calculated from the real start time. The display shows hours, minutes, seconds and hundredths.
Each lap records two numbers: the lap time (the split since the previous lap) and the total time. The fastest lap is marked in green and the slowest in red once there are at least two, which is useful for runs, swims, workouts and speech practice.
Like any browser-based timer, it's accurate for everyday use but isn't certified for official competition timing. Nothing is sent anywhere — the times stay on this page and disappear when you close it.
Frequently asked questions
Yes. Time is measured from the moment you pressed Start, so the reading is correct when you come back, even though the display only refreshes while the tab is visible.
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