How accurate is this online stopwatch?

Our online stopwatch uses high-resolution browser timing APIs (performance.now()) which provide millisecond-level accuracy. This is suitable for everyday applications including cooking, fitness training, study sessions, presentations, and general timing needs. For professional sports or scientific applications requiring sub-millisecond precision, dedicated hardware is recommended.

Does the stopwatch work offline?

Yes! Once you've visited our site, the stopwatch is cached using Progressive Web App (PWA) technology. This means you can continue using all features even without an internet connection. Your timer will keep running accurately, and any lap times or settings are preserved locally on your device.

Is this stopwatch completely free to use?

Yes, our online stopwatch is 100% free with no hidden fees, premium tiers, or required accounts. We believe timing tools should be accessible to everyone. The site is supported through optional donations and non-intrusive advertising that doesn't interrupt your timing activities.

Can I use this on my mobile phone or tablet?

Absolutely! The stopwatch is fully optimized for mobile devices with touch-friendly controls, responsive design that adapts to any screen size, and support for iOS and Android devices. You can even add it to your home screen for instant access like a native app.

What are the best uses for this online stopwatch?

Our stopwatch is versatile and popular for: cooking and baking (timing recipes), fitness workouts (HIIT intervals, rest periods, cardio sessions), studying (Pomodoro technique, timed practice tests), presentations (speech timing), gaming (speedruns, turn timers), meditation and yoga (session timing), photography (long exposures), and workplace productivity (time tracking, meeting management).

How do I use the Pomodoro technique with this timer?

To use the Pomodoro technique: 1) Switch to the Timer tab, 2) Set a 25-minute countdown for your work session, 3) Focus on your task until the timer completes, 4) Take a 5-minute break (set another timer), 5) After 4 work sessions, take a longer 15-30 minute break. Our timer includes audio alerts so you know when each interval ends.

Free Online Stopwatch & Timer

Precision timing for cooking, workouts, studying, and productivity. No downloads required.

⏱️ Precision Stopwatch

Count up with millisecond accuracy. Record lap times, track intervals, and measure any activity. Perfect for sports, cooking, and scientific timing.

⏰ Countdown Timer

Set custom durations from seconds to hours. Ideal for Pomodoro technique, HIIT workouts, cooking timers, and time-boxed study sessions.

🔔 Alarm Clock

Schedule alerts for specific times. Multiple alarm support with customizable sounds. Never miss an important moment or deadline.

📱 Works Everywhere

Fully responsive design works on desktop, tablet, and mobile. Add to your home screen for instant access like a native app.

🌐 Works Offline

Progressive Web App technology means the timer works without internet. Your timing continues accurately even when disconnected.

💯 100% Free

No registration, no downloads, no hidden fees. All features available immediately. Supported by optional donations from satisfied users.

Please enable JavaScript to use the interactive stopwatch.

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