Terms and Conditions

Effective Date: October 1, 2026

Welcome to Period Calculator (this website). By accessing or using this website, you agree to comply with and be bound by the following terms and conditions. If you disagree with any part of these terms, please do not use our website.

1. Informational and Educational Purpose Only

All calculators, phase estimators, ovulation tools, calendar projections, and articles provided on this website are designed solely for general informational and educational purposes.

NO MEDICAL ADVICE: The content on this website does not constitute clinical medical advice, formal diagnosis, treatment recommendations, or individualized medical counseling. It is not a substitute for clinical judgment from a licensed physician, OB/GYN, midwife, or certified healthcare provider.

2. No Contraceptive Guarantee (“Safe Days”)

Calculators estimating fertile windows or “safe days” (lower-pregnancy-likelihood days) are mathematical approximations based on biological averages. Under no circumstances should any calculator on this website be used as a primary or reliable method of contraception or family planning. Ovulation timing can fluctuate unexpectedly due to stress, illness, hormone shifts, or natural variability. Relying on calendar math alone carries a substantial risk of unintended pregnancy.

3. Limitation of Liability

To the fullest extent permitted by applicable law:

• This website and its operators, developers, and contributors shall not be held liable for any direct, indirect, incidental, consequential, or punitive damages arising from the use of, or inability to use, this website or its calculation tools.
• We make no warranties, express or implied, regarding the continuous availability, error-free operation, or mathematical certainty of algorithmic projections on this site.

4. Intellectual Property

All original web designs, calculation code, text articles, custom illustrations, and graphics on this website are protected under applicable copyright and intellectual property laws. You may not reproduce, republish, distribute, or scrape our content for commercial purposes without prior written authorization.

5. External Links

Our educational articles and calculator pages contain citations and hyperlinks to external scientific, governmental, and medical authorities (such as ACOG, NHS, CDC, and PubMed). We provide these references for academic transparency and do not control or assume responsibility for external third-party content.

6. Governing Law

These Terms and Conditions shall be governed by and construed in accordance with applicable laws, without regard to conflict of law principles.

7. Contact Information

For questions regarding these Terms, please contact us via email at infosemakanstr@gmail.com.