Free Sleep Calculator
Calculate Your Optimal Sleep Time
Use our free sleep calculator to find the perfect sleep schedule based on 90-minute sleep cycles. Get personalized recommendations for better sleep quality and wake up feeling refreshed.
🌙 Current Time:
🔔 Recommended Wake-up Times (Sleep Calculator Results):
📎 Sleep Quality Tips:
Keep the environment dim and avoid direct screen light to your eyes for better sleep quality.
Learn more sleep improvement strategies →About Our Sleep Calculator
How Our Sleep Calculator Works
Our sleep calculator uses the scientifically-proven 90-minute sleep cycle theory. Each sleep cycle includes light sleep, deep sleep, and REM sleep stages. By calculating backwards from your desired wake-up time, we ensure you complete full cycles for optimal rest and recovery.
Why Use a Sleep Calculator?
Waking up in the middle of a deep sleep cycle can leave you feeling groggy and tired. Our sleep calculator helps you time your sleep to wake up during lighter sleep stages, ensuring you feel refreshed and energized throughout the day.
Sleep Quality Improvement
Beyond timing, our calculator considers blue light exposure, sleep preparation time, and individual sleep difficulties. We provide personalized recommendations to help you achieve better sleep quality and overall health.