Free Online Stopwatch – Precise Timer with Milliseconds
This free online stopwatch measures elapsed time with millisecond precision. Start, pause, and clear with one click—no signup, no download, and no data leaves your browser. Perfect for workouts, cooking, experiments, and productivity tracking.
What Is an Online Stopwatch?
An online stopwatch is a browser-based timer that counts up from zero to measure how long an activity takes. Unlike a physical stopwatch, it runs in your browser on any device, shows millisecond precision, and requires no installation. It is useful for timing exercises, cooking, presentations, study sessions, or any task where you need an accurate elapsed-time reading.
How to Use This Online Stopwatch?
Click the green "Start" button to begin timing. The display updates every 10 milliseconds, showing minutes, seconds, and milliseconds. Click "Pause" to stop the count without resetting—click again to resume from where you left off. Click the red "Clear" button to reset the display back to zero and start fresh.
Why Use Our Online Stopwatch?
Our stopwatch runs entirely in your browser, so it works offline once loaded and keeps all timing data on your device. It is completely free, requires no account, and works on desktop and mobile. The display also syncs to your browser tab title while running, so you can see the elapsed time even when the tab is not focused.
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Frequently Asked Questions
Is this online stopwatch free?
Yes, it is completely free to use with no hidden charges, watermarks, or premium tiers.
Does it work offline?
Yes, once the page is loaded in your browser, the stopwatch works without an internet connection.
Is my data safe?
Absolutely. The stopwatch runs entirely in your browser and never sends any timing data to a server.
Do I need to create an account?
No account or signup is required. Just open the page and click Start.