Sleepy Bedtime Calculator

What it does

sleepytime (by somnia) is a minimalist bedtime calculator designed to eliminate morning grogginess by aligning your alarms with natural 90-minute sleep cycles. Instead of just counting hours, the tool works backward or forward in 90-minute increments from your target time, building in an adjustable 15-minute buffer for the time it takes to fall asleep.

If you head to bed right now, when should you wake up to feel refreshed? Use this sleep calculator to figure out exactly when to wake up or go to sleep.

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