Use Sleep Calculator to find the best time to go to bed or wake up based on 90-minute sleep cycles. Calculate REM sleep, ideal sleep time, and wake up refreshed.
Cost / License
- Free
- Proprietary
Platforms
- Online

Sleep Calculator is described as 'Want to wake up in a good shape? Find out the perfect bedtime or wake up time to rise feeling refreshed and energized' and is an website in the sport & health category. There are more than 25 alternatives to Sleep Calculator, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and Android Tablet apps. The best Sleep Calculator alternative is Sleep as Android, which is free. Other great sites and apps similar to Sleep Calculator are ShutEye, Sleep Cycle Alarm Clock, Pokémon Sleep and SleepRecovery.
Use Sleep Calculator to find the best time to go to bed or wake up based on 90-minute sleep cycles. Calculate REM sleep, ideal sleep time, and wake up refreshed.

r3app has launched Alarmr for Android. This modern world clock app transcends beyond the barriers of a typical alarm. It provides a host of cutting-edge features such as sleep timer, weather, news and world clock.



