What time should I sleep if I want to wake up at a specific time?

What time should I wake up if I sleep now?


The average human takes 15 minutes to fall asleep.

To wake up refreshed at 6:30 AM, you need go to sleep at one of the following times:

If you go to sleep right now, you should try to wake up at one of the following times:

    If you wake up at one of these times, you’ll rise in between 90-minute sleep cycles. A good night’s sleep consists of 5-6 complete sleep cycles.


    How does this sleep calculator work?

    Sleeptimecalculator.com uses a custom-made algorithm to determine when a an average person should sleep. The algorithm takes in our input of how long people usually take to fall asleep and matches it to align with our sleep cycles to achieve the best results.

    Is sleep calculator accurate?

    For the average human being the sleep calculator is accurate when talking about sleep quantity. The problem is often if a person is out of the normal spectrum due to outside factors affecting sleep and degrading the quality of sleep.

    How many sleep cycles should I get each night?

    Many studies have been conduced to see how many sleep cycles is most efficient for human beings. For the average person 5-6 sleep cycles would be the optimal number of cycles to feel refreshed and energized when waking up.

    How long is a sleep cycle?

    Studies show that the sleep cycle for an average person is 1,5 hours long from start to finish. It is important to calculate the time it takes for you to fall a sleep when taking the first sleep cycle into account.

    Why should I trust this sleep calculator?

    Our sleep calculator is based on the newest information on how people should sleep and is constantly updated to make sure that it lives up to our current scientific knowledge about sleep. Most other sleep calculators are based on old information and can therefore give results that are no longer considered correct.

    References for our sleep calculator