Online Alarm Clock
Set alarm time
Sound
- Sound will play when countdown endsAlarm name
List alarms
Online alarm clock - Set and manage alarms directly in your browser
Cronometro’s Online Alarm Clock is a simple, fast, and free way to set alarms directly from your web browser - no downloads or registrations required. Whether you need reminders for meetings, study sessions, workouts, or daily routines, this web-based alarm tool helps you stay organized and on schedule across any device.
For daily timekeeping, pair it with our online flip clock to stay punctual and productive.
Custom alarm settings
With our online alarm clock, you can set precise hours and minutes or quickly choose from popular preset time slots. Each alarm can be customized with its own title, making it easy to identify what the reminder is for at a glance. You can also select from multiple alarm sounds, preview them before saving, and control how long the alert plays so it matches your preferences.
Save and Manage Your Alarms
One of the most convenient features is built-in browser storage. All alarms you create are saved locally, so even if you refresh the page or reopen your browser, your active alarm list remains intact. From the alarm panel, you can enable or disable individual alarms, delete outdated ones, and manage your entire schedule in just a few clicks.
- Store alarms securely in your browser
- Enable or disable alarms instantly
- Remove old or unnecessary reminders
- Organize multiple alarms with custom titles
Comfortable light and dark mode
Cronometro’s alarm clock is designed for comfortable use at any time of day. Switch between light mode and dark mode to match your environment, or activate the sleep-friendly screen option to reduce visual distractions while waiting for the next alert. The clean interface keeps everything focused on what matters most: reliable time management.
- Select your desired time or a preset slot
- Choose an alarm sound and preview it
- Add a title for quick identification
- Save the alarm to your list
- Manage or disable alarms anytime
If you are searching for a free online alarm clock, a fast way to set alarms in your browser, or a flexible alternative to mobile apps, Cronometro delivers an efficient and user-friendly solution. Start creating alarms instantly, customize every detail, and take control of your daily schedule with our powerful web-based alarm clock tool.