ALARM IN 45 MINUTES
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Your Alarms
You don't have any alarms yet.
You've landed on the alarm in 45 minutes page. What does that mean? When you press "Set alarm", we automatically calculate what time it will be 45 minutes from now and schedule the alert for that exact moment. No mental math, no clock-watching.
What is an alarm in 45 minutes good for?
45 minutes matches a light sleep cycle: if you sleep 45 minutes you complete one phase and wake better than after 60. It is also a classic duration for classes, study sessions, or workouts.
How is it different from a 45 minutes timer?
If you are studying, you might prefer the 25-minute Pomodoro timer with breaks. This alarm marks the exact end time of your session.
How it works
- Open this page. The widget above already knows you want a relative alarm.
- Press "Set alarm". The system calculates the current time + 45 minutes.
- When the moment arrives, the alarm rings. You can snooze it or dismiss it.
Frequently asked questions
Does it work without an internet connection?
Yes, once the page has loaded, the alarm works completely offline. The clock uses your device's local time and the sounds are generated with the browser's Web Audio API.
What is the difference between an alarm in 45 minutes and a timer?
An alarm in 45 minutes calculates the exact time it will ring (current time + 45 minutes) and alerts you at that clock time, like an alarm clock. A timer counts down 45 minutes regardless of what time it is. If you want to know "at what exact time will it ring?", use this page. If you prefer watching a countdown, use the timer.
If I set an alarm for 45 minutes from now, will it keep working if I switch tabs?
Yes. The alarm uses the system clock and absolute timestamps, not a counter that stalls when you switch tabs. As long as the browser stays open, the alarm will ring even if the tab is not visible.