⏱️ Online Stopwatch with Lap Timer
A free, precision stopwatch that runs entirely in your browser — no login, no signup, no data sent anywhere, and works offline.
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About
Toolio's stopwatch displays elapsed time to hundredths of a second (MM:SS.cs) and records unlimited lap splits with both split and cumulative totals. Because everything runs client-side in JavaScript, your timing data never leaves your device — there is no server, no account, and no ads tracking your session. It works even when your internet connection drops, making it reliable for workouts, presentations, lab timing, or any task that needs an accurate, distraction-free timer.
How to use
- Click **Start** to begin timing — the display updates in real time.
- Click **Lap** to record a split — each lap shows its split time and cumulative total.
- Click **Pause** (the same Start button) to freeze the clock without losing your time.
- Click **Start** again to resume from where you paused.
- Click **Reset** to clear the display and all lap records.
FAQ
- Is this stopwatch free to use?
- Yes, completely free — no account, no subscription, no hidden fees.
- Does it upload my timing data anywhere?
- No. The stopwatch runs entirely in your browser. No data is sent to any server.
- Does it work offline?
- Yes. Once the page is loaded, the stopwatch works with no internet connection required.
- How many laps can I record?
- There is no limit. You can record as many laps as needed; they appear newest-first with both split and total times.
- How accurate is the stopwatch?
- It uses the browser's high-resolution `performance.now()` API and updates every 30 ms, displaying time to hundredths of a second — accurate enough for sports, presentations, and lab use.