Multi-functional online stopwatch with lap timing and precision tracking
Start, pause, or save laps instantly.
Review your saved timings.
Accurate to milliseconds for timing short events like sprint times or reaction measurements.
Record multiple intervals while the main timer continues running - essential for sports and training.
Runs entirely in your browser tab - no app download, no account, no configuration.
Everything runs inside your web browser. We never upload your text, files, or personal data to any servers.
No sign-ups, no subscriptions, and no usage limits. Get your results instantly in a single click.
It uses the browser's performance.now() API with sub-millisecond resolution, accurate to approximately 1 millisecond.
Yes, the timer continues running in the background even when the tab is not in focus.
Yes, click the Lap button as many times as needed. All laps are displayed with elapsed time and split times.
Yes, the responsive design works on iOS and Android browsers with full touch support.
Yes, lap data is not persisted between sessions. Copy or record important lap times before closing.
Yes, completely. All calculations and file conversions happen entirely inside your own browser. We do not store, view, or upload any of your input data to our servers.
No. UtilsGo is 100% free. You don't need to create an account, register, or pay for any features.
Built by UtilsGo • Last updated May 2026 • No ads • No tracking