Online Clock, Alarm, Timer and Stopwatch
XClock puts a local-time clock, labeled alarms, a lap stopwatch, and multiple countdown timers in your browser. Choose a tool above or open its dedicated page for a focused view. No account or installation is required.
Choose a time tool
Alarm: set a local-time alert with a label and sound. Timer: add and start separate named countdowns. Stopwatch: measure elapsed time and record laps. The clock shows the time reported by your device.
Know the browser limits
Keep the tab open and the device awake when an alarm or timer matters. Browser sleep, background delays, muted audio, or closing the page can prevent a timely alert. Stopwatch hundredths are for everyday use, not calibrated measurement. Settings are stored in this browser; the site also uses advertising and analytics technologies described in the privacy policy.
Guides
- Unfinished Tasks and the Zeigarnik Effect: A Five-Minute Start
- Notification Bankruptcy: A Radical Guide to Reclaiming Your Phone
- Parkinson’s Law: Why Your 15-Minute Task Just Took 4 Hours
- Time Blocking vs. Multitasking: A Practical Guide to Focus
- The History of Timekeeping: From Ancient Sundials to Atomic Accuracy
- The Pomodoro Technique Guide: How to Master Your Focus in 25-Minute Intervals
- XClock’s Approach to Digital Minimalism
