What is Sleep Cycle Calculator?
Sleep Cycle Calculator is a free online tool that helps you plan your optimal sleep and wake times based on natural sleep cycles. It provides science-based recommendations to improve your sleep quality and daily energy.
How do I use the calculator?
Simply enter your desired wake-up or bedtime, and the calculator will suggest the best times to go to sleep or wake up, based on 90-minute sleep cycles. You can also use the "Sleep Now" feature for instant recommendations.
Is my personal data safe?
Yes. We do not collect any personal information. For more details, please see our Privacy Policy.
Why do I see ads on the site?
We display ads to support the maintenance and development of the website. Ads are provided by Google AdSense and do not affect your privacy or user experience.
Can I use Sleep Cycle Calculator on mobile devices?
Yes, our website is fully responsive and works well on all modern smartphones and tablets.
What if I have trouble sleeping?
Our calculator provides general guidance, but if you have ongoing sleep problems, we recommend consulting a healthcare professional.
How accurate are the recommendations?
The recommendations are based on scientific research about sleep cycles, but individual needs may vary. Use the results as a guideline and adjust according to your own experience.
How can I contact you?
You can reach us at support@sleepcyclecalcapp.com.