XClock offers a precise, browser-based stopwatch designed for simplicity and accuracy. Whether you are tracking study intervals, timing a workout, or measuring laps, this tool runs directly in your browser with no downloads required.
Features of this Stopwatch
- Millisecond Precision: Accurate timing for sports and science.
- Lap Function: Record multiple split times without stopping the clock.
- Fullscreen Mode: Distraction-free interface for classrooms or gyms.
- Dark Mode: Easy on the eyes for late-night use.
How to use it
- Click the button below to launch the app.
- Select the Stopwatch tab at the top.
- Press Start to begin timing.
- Press Lap to record a split time below the main clock.
Why Use a Browser-Based Stopwatch?
In a world full of mobile apps, Xclock offers a distinct advantage: simplicity and speed. Our Online Stopwatch runs directly in your browser, meaning you don’t need to download suspicious software, drain your phone battery, or deal with invasive permissions just to track time. It is designed to be the perfect companion for tasks that require focus, from high-intensity interval training (HIIT) to classroom exams.
Perfect for Sports, Work, and Education
- For Athletes & Coaches: Use the Split/Lap feature to track individual runners or swimming laps without losing the total time. Because Xclock scales to any screen size, coaches can run it on a tablet for a high-visibility, sideline timing board.
- For Teachers & Classrooms: Project the stopwatch in Fullscreen Mode on a whiteboard. It’s an excellent way to keep students managed during quizzes, presentations, or group activities without the distraction of a ticking analog clock.
- For Productivity (Timeboxing): Curious how long a task actually takes? Start the stopwatch when you begin answering emails or coding. Tracking your “real” time vs. your “estimated” time is the first step in mastering personal productivity.
Precision You Can Trust
Unlike basic Javascript timers that can “drift” if your computer lags, Xclock uses date-based delta timing to ensure accuracy. Whether you leave the tab running for 5 minutes or 5 hours, the time displayed is synced to your system clock’s verified duration. Plus, with our strict privacy policy, your timing data stays local—we never track how you use the tool.
Frequently Asked Questions
Does the stopwatch keep running if I switch tabs? Yes. Xclock is designed to run in the background. You can switch to another tab to work or browse, and the stopwatch will continue counting up precisely.
Will it work offline? Once the page is fully loaded, the stopwatch functionality runs locally on your machine. You can disconnect from Wi-Fi and continue timing without interruption.