Online Alarm Clock
Tap the time to change it
How the alarm works
Set the hour and minute, choose a sound and a volume, then press Set alarm. The page shows how long is left until it rings. Keep the tab open and the device awake: browsers cannot ring an alarm from a closed tab.
Good for a nap, a reminder at work, or waking up on a laptop when your phone is charging in another room.
Wake up between sleep cycles
A night of sleep moves through cycles of about 90 minutes. Waking at the end of a cycle usually feels easier than waking in the middle of one. Tap I am going to bed now and the page suggests wake times such as 05:15, 06:45 or 08:15, allowing about 15 minutes to fall asleep.
Questions
Will the alarm ring if I close the tab?
No. The alarm works while the tab is open. Keep the device on and plugged in for long alarms.
Can I set more than one alarm?
Yes. Add several alarms; each one rings at its own time.
Is the sleep cycle helper medical advice?
No. It is a simple calculation based on 90 minute cycles, not a diagnosis or treatment.