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The best online bedtime calculator for a great night’s sleep

We’ve all been there. You’re reading a book, talking with a friend or got sucked into a new series on Netflix. Before you know it, it’s midnight.

And, whoops, you need to be up at 6 o’clock to get a jumpstart on a busy day of meetings. Now you’re counting on your fingers how many hours of sleep you’ll get. 

Sure, you can ballpark it and hope you’ll pass right out — or you can try this simple site that can actually help you get better, deeper sleep:

For a better night’s sleep

Now, the site is pretty bare-bones and it’s not as robust as a fancy sleep app. But it is free, easy to use and effective. You don’t need an expensive smartwatch to tell you how to get better rest.

Your body repairs itself as you sleep, so it’s essential each sleep cycle is completed before you wake up. When a cycle is interrupted, you will feel groggy and out-of-sorts throughout the day.

But how are you supposed to get through sleep cycles if you can’t control them? Well, that’s where this site comes in.

Here’s how it works: Put in what time you want to wake up, and calculates a bedtime. “I can do that myself,” I hear you saying. Not quite like this. works by counting backward in sleep cycles. Waking up in the middle of a sleep cycle leaves you tired, but waking up between cycles means you’ll wake feeling refreshed and alert. also includes the time it’ll take you to fall asleep. The default for this setting is an average of 14 minutes, and it can be adjusted in options. Based on your input, SleepyTime will provide you a list of the best times to fall asleep, along with how many sleep cycles you will experience.

Play with the calculator (it’s free, after all) and give it a whirl. A bad night’s sleep is the only thing you have to lose.

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