01Acceptance of these terms
Welcome to Sleep Calculator. These Terms of Use ("Terms") apply to your use of sleepcalculator.today and all of its tools and content. By using the site, you agree to these Terms and to our Privacy Policy. If you don't agree, please don't use the site.
02What we provide
We offer free online tools, including a sleep calculator, nap calculator, sleep debt calculator, chronotype quiz and sleep sounds, along with general articles about sleep. The tools are based on average sleep-cycle lengths and widely published sleep guidelines.
You can use the site without creating an account. We may add, change or remove features at any time without notice.
03Not medical advice
Everything on this website is for general information only. It is not medical advice and is not a substitute for advice from a doctor or other qualified health professional.
Results from our calculators are estimates. Real sleep cycles vary from person to person and night to night. If you have ongoing sleep problems, snoring, daytime sleepiness or any health concern, please talk to a qualified professional. Read our full Disclaimer for more details.
04Acceptable use
You agree to use the site only for lawful, personal purposes. You agree not to:
- copy, scrape or republish our tools, code, design or content without permission
- interfere with the site's security or normal operation, or try to gain unauthorized access
- use bots or automated systems that put an unreasonable load on the site
- use the site to break any law or to harm others
- click ads fraudulently or encourage others to do so
05Intellectual property
The website, including its tools, text, graphics, logos and code, is owned by Sleep Calculator (sleepcalculator.today) or used with permission, and is protected by copyright and other laws.
You may share links to our pages and use the results of our tools for your own personal use. You may quote short parts of our articles if you clearly credit sleepcalculator.today and link back to the original page.
06Ads and third-party links
The site shows ads from third parties such as Google AdSense and may link to other websites. We don't control and aren't responsible for third-party content, products, services or privacy practices. Your dealings with advertisers or other websites are solely between you and them.
07No warranties
The site and its tools are provided "as is" and "as available". We work hard to keep everything accurate and working, but we don't promise that the site will always be available, error-free or that the results will meet your needs.
08Limitation of liability
To the fullest extent allowed by law, we will not be liable for any direct, indirect, incidental or consequential loss or damage arising from your use of, or inability to use, the site or its tools, including any decisions you make based on calculator results.
09Changes to these terms
We may update these Terms from time to time. The "Last updated" date at the top shows when they were last changed. By continuing to use the site after changes are posted, you accept the updated Terms.
10Contact us
Questions about these Terms? Email us at info@sleepcalculator.today.