Millisecond-precision stopwatch with lap times.
Free · Runs in your browser · Last updated
| # | Lap | Total |
|---|
Start, stop, reset and record lap times to millisecond precision. Export laps to CSV for race timing or workout tracking.
All processing for Stopwatch happens locally inside your browser using JavaScript. Your input is never uploaded to a server, logged, or shared with third parties.
Yes. Stopwatch is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.
All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.
Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.
Stopwatch works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.
No. Stopwatch runs in any modern web browser with no installation, browser extension, or account required.