A simple website that calculates the best time to go to sleep based on when you need to get up, in order to help you feel more refreshed in the morning. uses the theory of sleep cycles to give a selection of bedtime options that will help you to wake up during a light sleep phase and feel more awake during the day. 

Please note that we cannot be held responsible for the security of data that you share outside of this website.

Click 'Get started' below!

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  • Free
  • A simple alternative to sleep-tracking
  • Easy to use


  • Only an approximation
  • Not personalised
  • No other features
  • Ineffective if you struggle to get to sleep

We would like to ask if you would tell us, anonymously, in which London Borough you live, work or study.

This information will help us develop more personalised support for Londoners, and improve our service to all users. Please see our terms and conditions for more information.