Productivity · Free tool
Online Stopwatch
Free online stopwatch with millisecond precision and lap times. Browser-only.
Updated May 2026
00:00.00
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What it does
Free online stopwatch with millisecond precision and lap times. Same component as our /stopwatch page; this URL captures the "online stopwatch" search.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/online-stopwatch" width="100%" height="720" frameborder="0" loading="lazy" title="Online Stopwatch" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Click Start to begin timing.
- Click Lap to record a split.
- Click Reset to start over.
Frequently asked questions
- Is the timing accurate?
- Yes — uses performance.now() which is sub-millisecond accurate in modern browsers. The display rounds to centiseconds (10ms) for readability.
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Learn more
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