How to use the online stopwatch
Press start (or the space bar) to start timing and press it again to stop. Press Lap (or L) to save a lap time without stopping, and Reset (or R) to start over.
The fastest lap is shown in green and the slowest in red. Copy the lap list to paste it into a spreadsheet or a message.
Never lose a time
The stopwatch is saved in your browser. If you close the tab or reload the page, it continues from where it was – even if it was running.
Choose how many decimals to show and switch to fullscreen to use it as a big race clock for sports, training and competitions.
Frequently asked questions
How accurate is the online stopwatch?
It measures time with your browser’s high-resolution timer and shows up to a thousandth of a second. The display updates with every screen refresh.
What happens if I close the tab?
The start time and the laps are saved, so the stopwatch continues when you come back – also after a restart of the browser.
Which keyboard shortcuts are there?
Space starts and stops, L records a lap, R resets and F switches to fullscreen.
Can I save the lap times?
Yes. Press “Copy laps” to copy all laps as a table that you can paste into a spreadsheet.