How do I set the alarm for 6 AM?

The time field is preloaded to 6 AM — click Set alarm and it's armed. The card below shows exactly how long until it rings.

Will the alarm ring if my computer sleeps?

The tab must be open and the computer awake — a browser can't ring from a sleeping machine. Keep the tab open; the page holds your screen awake while an alarm is armed.

Do I need to allow notifications?

No. The chime is synthesized inside the page when you set the alarm, so there's no permission prompt and nothing to install.

SmartClock

Free · one click · no permissions

Set alarm for 6 AM

The alarm time is preloaded to 6 AM. Click Set alarm and you're done. It shows exactly how long until it rings.

Alarm time

Label (optional)

Keep this tab open — the alarm rings from your browser, with a synthesized chime that needs no downloads and no permissions.

To wake at 6 AM, go to bed at

8:45 PM
6 cycles · 9 hours
10:15 PM
5 cycles · 7.5 hours
11:45 PM
4 cycles · 6 hours

Based on 90-minute cycles plus 15 minutes to fall asleep. Real cycles run roughly 70 to 120 minutes and change across the night, so treat these as a better starting point than a guess rather than a schedule to obey.

Waking at 6 AM

The most common weekday alarm there is. It suits a standard commute, and a bedtime somewhere between 8:45 PM and 11:45 PM completes a whole number of sleep cycles depending on how many you are after.

The sleep calculator works the same maths in the other direction if you want to start from a bedtime, and the alarm clock holds as many alarms as you need.

Frequently asked questions

How do I set the alarm for 6 AM?: The time field is preloaded to 6 AM — click Set alarm and it's armed. The card below shows exactly how long until it rings.
Will the alarm ring if my computer sleeps?: The tab must be open and the computer awake — a browser can't ring from a sleeping machine. Keep the tab open; the page holds your screen awake while an alarm is armed.
Do I need to allow notifications?: No. The chime is synthesized inside the page when you set the alarm, so there's no permission prompt and nothing to install.