Terms of Service

Last Updated: June 25, 2026 | Effective Date: June 25, 2026

1. Acceptance of Terms

By accessing and using Cal11 Calculator at https://cal11.calculator.city/ (the "Service"), you accept and agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, please do not use our Service.

These Terms apply to all visitors, users, and others who access or use the Service. By using the Service, you represent that you are at least 13 years of age and have the legal capacity to enter into this agreement.

2. Description of Service

Cal11 Calculator provides a collection of free, browser-based online calculators covering mathematics, science, finance, health, statistics, and other fields. The Service is provided free of charge to users. We reserve the right to modify, suspend, or discontinue any aspect of the Service at any time without notice.

3. Medical, Financial & Professional Disclaimer

The content and results provided by Cal11 Calculator are for informational and educational purposes only and are not intended as, and should not be used as, a substitute for professional advice.

Medical Disclaimer

Health-related calculators (including BMI calculators, dosage calculators, and similar tools) are not medical devices and should not be used to diagnose, treat, cure, or prevent any disease or medical condition. Always consult a qualified healthcare professional before making any health-related decisions.

Financial Disclaimer

Financial calculators (including mortgage, investment, tax, and currency calculators) are provided for illustrative purposes only. Results are estimates based on the information you provide and may not reflect actual outcomes due to changing market conditions, fees, and other variables. Always consult a qualified financial advisor before making financial decisions.

Legal Disclaimer

Nothing on this website constitutes legal advice. For legal questions, please consult a qualified attorney.

We are not responsible for any decisions made based on the results from our calculators.

4. Accuracy of Information

While we strive to ensure the accuracy of all calculators and content on our website, we make no guarantees about the completeness, reliability, or accuracy of any information provided. Calculator results are based on the formulas and data we have implemented, which may contain errors or may not reflect the most current standards.

We encourage users to verify critical calculations independently and to report any errors they find using our contact form.

5. Permitted and Prohibited Use

Permitted Use

You may use Cal11 Calculator for:

• Personal, educational, and non-commercial research purposes
• Linking to our website and individual calculator pages
• Embedding calculator pages in educational or informational contexts (with attribution)

Prohibited Use

You may NOT use Cal11 Calculator to:

• Scrape, crawl, or systematically download content from our website without prior written permission
• Reproduce or republish our proprietary calculator code or content without permission
• Use the Service for any unlawful purpose or in violation of any laws or regulations
• Transmit viruses, malware, or other harmful code
• Attempt to gain unauthorized access to any part of our systems
• Use automated tools to interact with our website in a way that imposes unreasonable load on our infrastructure
• Remove or alter any copyright, trademark, or other proprietary notices

6. Intellectual Property

All content on Cal11 Calculator, including but not limited to text, graphics, logos, calculator code, and user interface designs, is the property of Cal11 Calculator or its content suppliers and is protected by applicable intellectual property laws.

The formulas used in our calculators are based on publicly available mathematical and scientific sources. Our proprietary implementations, explanations, user interfaces, and supporting content are protected by copyright.

You may not reproduce, distribute, modify, create derivative works of, or commercially exploit any content from this website without our prior written consent.

7. Third-Party Links and Content

Our website may contain links to third-party websites. These links are provided for your convenience only. We have no control over the content of those websites and accept no responsibility for them or for any loss or damage that may arise from your use of them. Our inclusion of a link does not imply any endorsement of the linked website.

8. Limitation of Liability

To the maximum extent permitted by applicable law, Cal11 Calculator and its operators, directors, employees, and agents shall not be liable for any:

• Indirect, incidental, special, consequential, or punitive damages
• Loss of profits, revenue, data, or business opportunities
• Personal injury or property damage
• Damages arising from errors or inaccuracies in calculator results
• Damages arising from your reliance on the Service for professional, financial, medical, or other decisions

In no event shall our total liability exceed USD $100 or the amount you paid us in the past 12 months, whichever is greater.

9. Disclaimer of Warranties

Cal11 Calculator is provided "AS IS" and "AS AVAILABLE" without any warranties of any kind, express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement. We do not warrant that the Service will be uninterrupted, error-free, or free of viruses or other harmful components.

10. Indemnification

You agree to indemnify, defend, and hold harmless Cal11 Calculator and its operators, directors, employees, and agents from and against any claims, liabilities, damages, losses, and expenses (including reasonable legal fees) arising out of or in connection with your use of the Service, your violation of these Terms, or your violation of any rights of a third party.

11. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the jurisdiction in which Cal11 Calculator operates, without regard to its conflict of law provisions. Any disputes arising under these Terms shall be resolved in the competent courts of that jurisdiction. If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions shall continue in full force and effect.

12. Changes to Terms

We reserve the right to modify these Terms at any time. Changes will be effective immediately upon posting to the website. Your continued use of the Service after any changes constitutes your acceptance of the new Terms. It is your responsibility to review these Terms periodically.

13. Contact Information

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

• Email: legal@calculator.city
• Contact Form: cal11.calculator.city/contact