Terms of Use

1. Acceptance of Terms

By accessing and using Period-Calculator.net (the "Service"), you agree to these Terms of Use. If you do not agree with any part of these terms, please do not use the Service.

2. Medical Disclaimer

Not Medical Advice: The information and calculations provided by Period Calculator are for informational and educational purposes only. They are not intended to be, and should not be interpreted as, medical advice or a substitute for professional medical care.

Predictions are Estimates: Period and ovulation predictions are based on average cycle patterns and mathematical calculations. They are estimates and may not accurately reflect your individual cycle. Many factors can affect menstrual cycles, including stress, illness, medication, lifestyle changes, and underlying health conditions.

Not for Birth Control: This calculator should NOT be used as a method of birth control or contraception. Fertility windows and "safe days" are estimates and cannot guarantee pregnancy prevention.

Not for Fertility Treatment: While the calculator can help identify potential fertile windows, it is not designed for, and should not be relied upon for, fertility treatment planning. Consult a fertility specialist for personalized advice.

Consult a Doctor: If you experience irregular cycles, unusual symptoms, severe pain, very heavy bleeding, or have concerns about your reproductive health, please consult a qualified healthcare provider immediately.

3. Use of the Service

Free to Use: Period Calculator is provided free of charge for personal, non-commercial use.

Accurate Information: While we strive to ensure the calculator is accurate and up-to-date, we make no warranties or guarantees about the accuracy, completeness, or reliability of the calculations or information provided.

Your Responsibility: You are responsible for entering accurate data. The quality of predictions depends on the accuracy of the information you provide.

No Account Required: You can use the Service without creating an account. Any data you choose to save is stored locally on your device only.

4. Limitation of Liability

To the fullest extent permitted by law:

• Period-Calculator.net and its creators shall not be liable for any direct, indirect, incidental, consequential, or punitive damages arising from your use of the Service
• We are not responsible for any pregnancy (wanted or unwanted), health issues, or medical conditions that may result from relying on the calculator's predictions
• The Service is provided "as is" and "as available" without any warranties of any kind, either express or implied
• We do not guarantee that the Service will be uninterrupted, timely, secure, or error-free

5. Privacy

Your privacy is important to us. Please review our Privacy Policy to understand how we handle data. Key points:

• All calculations happen in your browser
• We do not collect or store your menstrual data
• Your data never leaves your device
• No accounts or personal information required

6. Prohibited Uses

You agree not to:

• Use the Service for any illegal purpose
• Rely on the Service as a form of birth control or contraception
• Make medical decisions solely based on the calculator's output
• Attempt to reverse engineer, copy, or reproduce the Service
• Use the Service in any way that could damage, disable, or impair the website
• Present the calculator's predictions as medical advice

7. Intellectual Property

All content on Period-Calculator.net, including text, graphics, logos, icons, and code, is the property of Period-Calculator.net and is protected by copyright and other intellectual property laws. You may not reproduce, distribute, or create derivative works without explicit permission.

8. External Links

Our website may contain links to third-party websites or resources. We are not responsible for the content, privacy practices, or terms of use of any external sites. Use of third-party links is at your own risk.

9. Changes to Terms

We may update these Terms of Use from time to time. Changes will be posted on this page with an updated "Last Updated" date. Your continued use of the Service after any changes constitutes acceptance of the new terms.

10. Governing Law

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

11. Contact Us

If you have questions about these Terms of Use, please contact us:

Important Medical Disclaimer