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A precise online stopwatch with lap times, fastest and slowest laps highlighted, keyboard shortcuts, and CSV export.
Also covers: Lap timer · Stopwatch with laps
00:00.00
Keyboard: Space start/stop · L lap · R reset
Click Start or press Space. Stop pauses the time and Resume continues from where it stopped.
Click Lap or press L to record a split. The lap table shows each lap's time and the running total, with the fastest and slowest laps marked. Copy the laps as CSV for a spreadsheet.
It measures with the browser's high-resolution clock (performance.now), which is accurate to well under a millisecond and isn't affected by changes to your device's clock. The display shows hundredths of a second.
Yes. It measures elapsed time from when you pressed Start, so the time stays correct even while the tab is in the background and the display isn't updating.
No. The stopwatch and laps live only in this page; reloading clears them.
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