Stopwatch
Online stopwatch with laps and keyboard shortcuts.
Free
Runs in your browser
00:00.00
Keys: Space start/stop, L lap, R reset
| Lap | Lap time | Total |
|---|
About this tool
Stopwatch times anything to a hundredth of a second and records laps with both the lap time and the running total. The fastest and slowest laps are highlighted, and keyboard shortcuts let you use it without looking.
How to use Stopwatch
- Press Start or the space bar.
- Press Lap or L each time you want a split.
- Stop, then copy the laps or press R to reset.
Questions people ask
How accurate is this stopwatch?
It uses the browser’s high-resolution clock (performance.now), which is accurate to well under a millisecond. The display shows hundredths of a second.
What is the difference between lap time and total?
Lap time is the time since the previous lap. Total is the time since you started, also called the split time.
Does it keep running if I switch tabs?
Yes. Time is measured from the start moment rather than counted, so it stays correct even when the tab is in the background.
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