Online Stopwatch with Laps
Time anything to the hundredth, with laps and splits.
Keyboard: Space start/pause, L lap, R reset.
About the Stopwatch
A free online stopwatch with lap and split times, fastest and slowest laps highlighted, keyboard shortcuts, and laps you can copy as CSV.
How to use the Stopwatch
- Press Start (or the Space bar) to begin timing, and Pause to stop. Press Resume to carry on from where you paused.
- Press Lap (or L) at the end of each lap. Each row shows the lap's own time and the total split time, with the fastest lap in green and the slowest in red.
- Copy the laps as CSV to paste them into a spreadsheet, and press Reset (or R) to start again.
Examples
Input
Laps pressed at 1:05.43, 2:10.00 and 3:20.50
Output
Lap,Lap time,Split time 1,01:05.43,01:05.43 2,01:04.57,02:10.00 3,01:10.50,03:20.50
Frequently asked questions
Does it keep time accurately if I switch tabs?
Yes. The stopwatch records the moment you pressed Start and works out the elapsed time from the browser's high-resolution clock, so it doesn't drift or lose time when the tab is in the background and the display updates less often.
What's the difference between lap time and split time?
Lap time is how long that single lap took. Split time is the total elapsed time when the lap was recorded. In the example, lap 2 took 1:04.57 and ended with the clock on 2:10.00.
Which keyboard shortcuts are there?
Space starts and pauses, L records a lap and R resets. They're ignored while you're typing in a text field, and Space on a focused button just presses that button.