• Omnilude ToolsCollection of Online Tools
  • Home
Online Tools
  • Developer Tools
  • Text Tools
  • Useful Tools
  • Time Tools
    • Stopwatch
    • Timer
    • Alarm Clock
    • D-Day
    • Global Time
  • Calculator Tools

Alarm Clock

Get notified at a specified time

Alarm Clock

Get notified at a specified time

Current Time

--:--:----

Next Alarm

No active alarms

Set Alarm

RepeatOnce

No alarms set

About Alarm Clock

Multiple Alarms

Set multiple alarms and toggle them individually on or off.

Repeat Options

Choose once, every day, weekdays, weekends, or any custom set of days.

Fullscreen Mode

Switch to fullscreen to view the current time on a large display.

What is the Online Alarm Clock?

A web-based alarm tool that sends notifications at your desired time in the browser. Set and manage multiple alarms simultaneously with sound notifications at alarm time.

  • Set multiple alarms and manage each one individually
  • Custom name (label) for each alarm
  • Individual enable/disable toggle for each alarm
  • Repeating sound when an alarm time arrives
  • Large clock display in full-screen mode
  • Real-time display of the current time

How to Use

  1. 1

    Set the Alarm Time

    Enter the hour (0–23) and minute (0–59) in 24-hour format.

  2. 2

    Name the Alarm

    Describe the alarm's purpose in the name field to distinguish it from other alarms.

  3. 3

    Add the Alarm

    Click Add Alarm to add it to the list and activate it automatically.

  4. 4

    Manage Alarms

    Use the toggle to enable or disable a saved alarm, and delete alarms you no longer need.

  5. 5

    Acknowledge the Alarm

    At the scheduled time, an alert sounds and a full-screen overlay appears. Press Stop Alarm to dismiss it.

Frequently Asked Questions

There is no limit to the number of alarms. Add as many as you need.

No. Alarms work only while the browser is open, so you must keep the tab open to receive them.

The tool currently provides one default alarm sound. It uses the Web Audio API to repeat the sound so you are less likely to miss it.

You enter alarm times in 24-hour format, but the list displays them in AM/PM format for easier reading.

When an alarm rings, an overlay appears in the center of the screen. Click 'Stop Alarm' to dismiss the alarm and stop the sound.

Tips & Best Practices

  • Give each alarm a descriptive name so you can identify its purpose at a glance.
  • Disable alarms you do not need right now instead of deleting them, then enable them again later.
  • Use full-screen mode as a wall clock while still receiving alarms.
  • Set an alarm before a meeting or class so you do not lose track of time.
  • Set alarms for several times of day to organize your daily routine.

Omnilude Tools

A free collection of online tools for developers, designers, and creators. All data is processed locally in your browser.

Developer Tools

  • UUID Generator
  • Timestamp Converter
  • Encoder/Decoder
  • Color Picker

Text Tools

  • JSON Editor
  • Text Compare
  • Text Counter
  • Markdown

Legal

  • Privacy Policy
  • Terms of Service
  • About Us

© 2026 Omnilude. All rights reserved.