How it Works

This tool runs entirely in your browser using JavaScript, without downloading any software. The Stopwatch uses the high-precision performance.now() or Date.now() API to calculate time differences down to milliseconds. The Timer sets a target end time and continuously recalculates the remaining duration, triggering an audio alarm when it reaches zero.

Use Cases

⏱️ Sports & Fitness

Use it for HIIT intervals, lap timing, or plank records. Millisecond precision helps you track your performance accurately.

🍅 Pomodoro Technique

Set a 25-minute timer for focused work, followed by a 5-minute break. A proven method to boost productivity.

🍳 Cooking & Baking

Perfect for boiling eggs, grilling steaks, or proofing dough. The alarm ensures you never overcook your food.

🎤 Speech & Meetings

Time your speeches or presentations to ensure you stay within the allotted time limit and look professional.

FAQ

Does the timer continue if I close the tab?

If the tab is completely closed, the timer will reset as this is a client-side tool. However, if you just switch tabs or minimize the browser, it continues running in the background.

Is there an audio alarm?

Yes, a beeping sound will play when the countdown reaches zero. Please ensure your device volume is up and audio permissions are granted.

How accurate is it?

Extremely accurate. We rely on the system's hardware clock to calculate time deltas, ensuring synchronization even if your computer lags.

Does it use data?

Almost none. Once the page is loaded, all timing logic runs offline in your browser.

How many laps can I record?

There is no theoretical limit. You can record as many laps as you need, and the list will scroll to show the latest ones.

Can I set a timer longer than 60 minutes?

Yes, you can input any number in the "Hours" field. The tool supports countdowns up to 99 hours, 59 minutes, and 59 seconds.

Are there keyboard shortcuts?

Currently, we optimize for touch & mouse interactions to avoid conflicts with browser shortcuts. Please use the on-screen buttons.

Why can't I hear the sound?

Browsers often block auto-playing audio. Ensure you have interacted with the page (clicked Start) and your system volume is on.

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Online Stopwatch & Timer