How-To Geek Calculates an Ideal Bedtime Based On Your Morning Schedule is a web-based sleep calculator that uses average sleep cycle lengths to calculate what time you should go to bed in order to rise at a predetermined well rested and alert.

Plug in the time you need to wake up and hit Calculator. charts out the 90 minute sleep cycles that will occur over your sleep period and, working backwards, suggests time you should fall asleep in order to wake up in between those cycles in order to increase alertness and have an easier time peeling yourself out of bed.

For example, let’s say you need to get up at 7:00 AM. It will suggest you fall asleep at 10:00 PM/11:30 PM/1:00 AM/2:30 AM in order to align your sleep cycles with your proposed rising time. Hit up the link below to take it for a spin.

Jason Fitzpatrick is a warranty-voiding DIYer who spends his days cracking opening cases and wrestling with code so you don't have to. If it can be modded, optimized, repurposed, or torn apart for fun he's interested (and probably already at the workbench taking it apart). You can follow him on if you'd like.

  • Published 04/5/12

Comments (3)

  1. Vyacheslav

    I’ve been using it for half a year now and it really works. Waking up in the morning isn’t such a big deal now and I’m also feeling more relaxed during the day. It’s very easy and self explanatory, I highly recommend everyone to try to use it.

  2. r

    That’s great !….however, I have absolutely no self-discipline. So,…

  3. MJ

    I’ll give this a try.

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