Sleep Cycle Calculator: What Time Should I Go To Bed?

Man sleeping in bed

You’ve probably heard that you need to get 8 hours of sleep per night to feel fit and rested. While it is important to get plenty of sleep, it doesn’t necessarily mean you will be more rested. The ideal time to go to sleep at night depends on when you have to wake up the next morning. This sleep cycle calculator can help you get to know your rhythm and wake up more refreshed.

Eine Frau liegt im Bett und schläft

Now it’s time to sleep

The sleep cycle calculator tells you when you should go to bed to wake up refreshed:


Maybe you’ve noticed that there is 90 minutes between each suggested bedtime. Why is that, you ask?

Each sleep cycle lasts 90 minutes

A good night’s sleep consists of five to six sleep cycles. During each cycle, our body goes through the following five sleep stages:

1. Light sleep stage

2. Light sleep stage

3. & 4. Deep sleep stage

5. Dream or REM sleep stage (REM stands for rapid eye movement. During REM sleep, your eyes move rapidly, and you experience vivid dreams).

If you wake up during one of these stages, you will feel sluggish and tired.

