About the Stopwatch

The Stopwatch is a free online tool that lets you start, stop, lap — for quick, no-fuss calculations and everyday tasks. Everything runs locally in your browser, so it is fast, completely private, and works even when you are offline.

Whether you are at home, work or on the go, the Stopwatch gives you instant results with no installation, no account and no limits.

How to use the Stopwatch

  1. Set the duration or options using the input fields.
  2. Press Start to begin — the timer runs entirely in the page.
  3. Use pause, reset or lap controls as needed; an alarm sounds when time is up.

Frequently asked questions

Is the Stopwatch free to use?

Yes. The Stopwatch is completely free with no sign-up, no usage limits and no watermarks. Use it as many times as you like.

Is my data safe and private?

Absolutely. The Stopwatch processes everything inside your browser — your input is never uploaded to any server, so your data stays 100% private.

Are the results accurate?

Yes. Calculations use standard formulas and update instantly as you type, so you always get precise, reliable results.

Do I need to install anything or use it on mobile?

No installation needed. The Stopwatch works in any modern browser on desktop, tablet and mobile.

What does the Stopwatch do?

It helps you start, stop, lap quickly and accurately, with a clean interface and one-click copy or download of the result.

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