Sleep Calculator

Find the best times to sleep or wake up based on your natural sleep cycles

Sleep Calculator Form

About Sleep Cycles and REM Sleep

REM Sleep Phase: REM (Rapid Eye Movement) sleep is a crucial phase of the sleep cycle where dreaming occurs and the brain is highly active. It plays an important role in memory consolidation and emotional regulation.

Sleep Cycles: Sleep occurs in cycles lasting about 90 minutes each, alternating between light sleep, deep sleep, and REM phases. Completing multiple full cycles leads to more restorative sleep.

Falling Asleep: On average, it takes about 14 minutes to fall asleep after going to bed, but this can vary from person to person. You can adjust this value above for a more personalized calculation.

Note: The times calculated here are estimates based on typical sleep cycle lengths and average falling asleep time. Individual sleep patterns may vary.