Stopwatch
Time anything with laps and splits, right in your browser. Nothing is uploaded.
Files are processed in your browser and never uploaded.
How to use Stopwatch
Open the page
There is nothing to fill in. The full list is rendered as soon as the page loads.
Find your entry
Scroll to the section you need.
Keep it to hand
The page is plain static HTML, so it still works if you lose your connection after loading it.
What this tool does
Accurate to a hundredth of a second
Timing is taken from the system clock rather than counted frame by frame, so it stays accurate to a hundredth of a second.
Lap and split times
Lap records a split without stopping the clock, and the list keeps both the lap time and the total elapsed.
Resume after stopping
Stopping and starting again continues from where you were, so a pause does not cost you the timing.
Works offline
Once the page has loaded it keeps working with no connection at all.
No sign-up
There is no account, no sign-up and nothing is uploaded.
Frequently asked questions
Is the stopwatch accurate?
Yes. It measures the real elapsed time rather than counting frames, so it stays accurate to a hundredth of a second even if the display updates pause.
Is anything uploaded?
No. The stopwatch runs entirely in your browser with nothing uploaded, and it works offline.
Can I record lap times?
Yes. Press Lap while running to record each split and the running total, listed with the most recent at the top.
What happens if I stop and start again?
Stopping pauses the time and the button becomes Resume, so you can continue from where you left off without losing your laps.
Does it work on mobile?
Yes. It is fully responsive and works in any modern mobile browser.
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