Start, pause, record laps, and reset with precision and visual clarity.
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No laps recorded yet.
The online stopwatch works directly in your browser to measure intervals with precision. Start, pause/resume, record laps, and track the performance of each split—all locally on your device (no registration required).
You can automatically highlight the fastest lap and the slowest lap, adjust sounds and volume, and share the lap results by copying them to your clipboard.
Tip: Bookmark this page (Ctrl+D) to have the stopwatch always at hand.
How to Use the Online Stopwatch (Step-by-Step)
Start: Click "Start" to begin counting.
Pause/Resume: Use the same button to pause and continue when needed.
Lap: Click "Lap" to record a partial time; each lap appears listed with the lap time and cumulative time.
Stop/Reset: "Stop" halts the count, and "Reset" clears the time and lap list.
Share Laps: Use the "Share Laps" button to copy all splits (includes fastest/slowest markers).
Application Features (Highlights)
Laps: Record unlimited splits per session and view the cumulative total.
Visual Highlight: Fastest lap in green and slowest in red for immediate analysis.
Sounds and Volume: Enable/disable app sounds and adjust the volume as you prefer.
Easy Sharing: Copy formatted times to paste into apps, emails, or reports.
Light/Dark Theme: Follows the site's theme for good readability.
Privacy by Default: Local operation in the browser; nothing is sent to servers.
Best Practices
Name External Contexts: When pasting laps, indicate the activity/conditions (e.g., running series, task, environment).
Interpreting Laps: Use the fastest/slowest lap to assess consistency and fatigue.
Sound and Volume: Test the volume in both the app and your device's system settings.
Technical Limitations
Tab Open: The page must be kept open (it can be in the background).
No Suspension: Does not work with the device turned off, in sleep, or hibernation mode.
Audio Autoplay: Some browsers require interaction (click/key press) before allowing sounds.
Frequently Asked Questions (FAQ)
Do I need to keep the tab open? Yes. The tab can be in the background but must not be closed.
Does it work in hibernation/sleep mode? No. The device must remain on and active.
How do laps work? Each click on "Lap" records a split; the app highlights the fastest and slowest.
Can I share the results? Yes. Use "Share Laps" to copy everything to the clipboard.
Is my data private? Yes. Usage is local in the browser; nothing is sent to servers.
Note: Educational content; does not replace medical, psychological, or professional advice. Adapt usage to your context and health.