Calculate the best times to go to sleep and wake up with this free web-based tool, providing personalized sleep schedules based on your desired total sleep time and wake-up time.
SleepyTi.me is a free web-based calculator that helps you figure out the optimal times to go to sleep and wake up. It was created by engineers who wanted to use science and data to improve sleep habits.
To use SleepyTi.me, you simply enter your desired total sleep time (e.g. 7 hours 30 minutes) and the time you need to wake up. SleepyTi.me then calculates what time you should go to bed and fall asleep in order to get your targeted amount of sleep.
The tool works by factoring in the average time it takes to fall asleep plus the multiple cycles of REM and light sleep you go through each night. By aligning your sleep schedule with your circadian rhythm, SleepyTi.me aims to help you wake up at the end of a REM or light sleep cycle, so you feel more refreshed.
In addition to the sleep calculator, the site provides lots of helpful science-based advice on improving sleep quality through lifestyle changes like limiting blue light exposure, caffeine intake, and more. There are also customizable sleep profile settings.
Overall, SleepyTi.me is a handy free tool for people who want use scientific data to improve their sleep habits and energy levels.
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