⏰ Online Alarm Clock

The Online Alarm Clock lets you set alarms directly in your web browser with no downloads, no sign-ups, and no apps to install. It features a beautifully animated analog clock face, a crisp digital time display, six unique alarm sounds synthesized in real time, and snooze support — all running entirely on your device. Whether you need a quick reminder for a meeting, a wake-up call during a nap, or a timer for your study sessions, this tool has you covered.

Key Features

How to Use the Online Alarm Clock

1. Set the time — Use the hour, minute, and AM/PM selectors to choose when you want the alarm to go off.
2. Pick a sound — Select one of six built-in sounds. Click the Preview button to hear it before setting the alarm.
3. Add a label (optional) — Give your alarm a name like "Wake Up" or "Take Medicine" to remember what it's for.
4. Click "Set Alarm" — Your alarm appears in the list below. You can add more alarms or toggle existing ones on and off.
5. Keep the tab open — When the alarm time arrives, the sound will play and a visual notification will appear. Choose Dismiss to stop or Snooze to delay.

Common Use Cases

Tips for Best Results

• Keep the tab open — The alarm runs in JavaScript, so the browser tab must remain open. You can minimize the window or switch tabs, but don't close the alarm tab.
• Check your volume — Make sure your device volume is turned up so you can hear the alarm sound.
• Mobile users — Keep your phone screen on or use your device's "keep awake" setting. Some mobile browsers may suspend background tabs.
• Preview sounds — Click the Preview button to hear each sound before setting your alarm so you pick the right one.

Frequently Asked Questions