Sleep Cycle Bedtime Calculator

Waking up in the middle of a deep sleep cycle tends to feel far worse than waking up between cycles, even with the same total hours.

Enter either a wake-up time or a bedtime, and see several options timed to land between sleep cycles instead of in the middle of one.

Based on the widely used approximation of 90 minute sleep cycles plus a short window to fall asleep.

See multiple options at once so you can pick the one that best fits the rest of your schedule.

This is a general reference based on averages, not a personalized medical recommendation.

A simple way to time sleep a little more intentionally instead of just picking a round number.