Online Alarm Clock

Alarm

Time's up!

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XClock is a reliable online alarm clock designed to wake you up or remind you of important tasks. It uses your browser’s audio capabilities to play a loud, continuous alert sound, complete with a snooze function.

Key Features

  • Smart Snooze: Default 5-minute snooze button to help you wake up gradually.
  • Custom Labels: Name your alarms (e.g., “Wake Up”, “Meeting”, “Meds”) to stay organized.
  • System Prevention: Active alarms prevent your computer from going to sleep, ensuring the sound plays when needed.
  • Multiple Alarms: Set as many different alarm times as you need throughout the day.

How to set an alarm

  1. Click the button below to launch the clock.
  2. Select the Alarm tab.
  3. Choose the Hour, Minute, and AM/PM.
  4. (Optional) Type a label for the alarm.
  5. Click Set Alarm.
  6. Leave the tab open—the alarm will ring even if you are browsing other sites.

Wake Up on Time with the World’s Most Reliable Online Alarm

Xclock transforms your browser into a fully functional digital alarm clock. Whether you are a heavy sleeper who needs a loud wake-up call or a student needing a reminder for your next class, our tool ensures you never miss a moment. Unlike smartphone alarms that can be easily silenced and ignored, Xclock forces you to engage with your computer to turn it off, making it an excellent solution for those who struggle to get out of bed.

Designed for Heavy Sleepers and Deep Focus

  • Loud & Custom Sounds: One beep doesn’t fit all. Choose from a variety of alarm tones—from aggressive digital buzzers for heavy sleepers to gentle chimes for a calm morning. You can test the volume directly in the browser to ensure it is loud enough to wake you.
  • The “No-Install” Advantage: Why install clunky software? Xclock works instantly in Chrome, Edge, Firefox, and Safari. It is perfect for travelers using hotel computers or office workers who cannot install third-party apps on their work laptops.
  • Visual & Audio Alerts: Even if your volume is low, the tab title will flash when the alarm triggers, giving you a visual cue that your time is up.

More Than Just a Morning Alarm

While Xclock is perfect for waking up, it is also a versatile productivity tool:

  • Meeting Reminders: Set an alarm 5 minutes before your Zoom call so you never join late.
  • Medication Alerts: Create a recurring label like “Take Meds” to manage your health schedule while you browse the web.
  • Power Naps: Set a quick 20-minute alarm and rest easy knowing your laptop will wake you up.

Frequently Asked Questions

Will the alarm work if I close the tab? No. Like all browser-based tools, Xclock requires the tab to remain open to function. However, you can switch to other tabs, minimize the window, or work in other applications, and the alarm will still sound.

What happens if my internet disconnects? Once you load Xclock, the alarm code runs locally on your machine. Even if your Wi-Fi drops in the middle of the night, the alarm will still go off at the set time.

Does it work if my computer goes to sleep? Xclock includes active scripts to help prevent sleep mode, but we strongly recommend plugging your laptop into a power source and adjusting your system settings to “Never Sleep” if you are setting an alarm for the next morning.