Sleep Smarter - Calculate Your Ideal Bedtime & Wake Time
Sleep Smarter — Free Sleep Calculator & Bedtime Optimizer

Wake Up Refreshed. Every Time.

Discover your sleep type and get a personalized diagnosis. Find out exactly what's destroying your sleep — and how to fix it.

What's Destroying Your Sleep?

Take the 60-second Sleep Type Quiz and get your personalized diagnosis.

Discover My Sleep Type →

Takes less than 2 minutes • 100% free • Personalized results

Or use the Sleep Calculator

The Science of Sleep Cycles

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90-Minute Cycles

Your brain cycles through light sleep, deep sleep, and REM roughly every 90 minutes.

Wake Between Cycles

Waking at the end of a cycle (not mid-cycle) is the key to feeling refreshed.

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14 Min to Fall Asleep

We account for the average 14 minutes it takes to fall asleep in our calculations.