Free Interactive Sleep Tools & Calculators

Optimize your sleep quality, calculate ideal bedtimes, and manage your circadian health with our evidence-based tools.

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Calculate your ideal bedtime or wake-up time based on 90-minute natural sleep cycles to wake up feeling refreshed.

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Determine the exact time you should stop drinking coffee or tea based on your bedtime to protect deep sleep.

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Evaluate the percentage of time spent asleep versus total time in bed against medical 85%+ standards.

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Discover if you are a Bear, Lion, Wolf, or Dolphin, and unlock your personalized optimal daily schedule.

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Find the exact alarm time for a 20-minute power recharge or a full 90-minute cycle without post-nap grogginess.

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Track your accumulated sleep loss over the past week and get actionable steps to catch up safely.