Terms of Service

Last updated: May 20, 2026 ~4 min read
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Acceptance of Terms

By accessing or using CalkHub ("the Service"), you agree to be bound by these Terms of Service. If you do not agree with any part of these terms, please do not use our Service.

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2. Description of Service

CalkHub provides free, browser-based calculator tools for informational and educational purposes. Our tools cover health, finance, mathematics, and everyday calculations. All tools are provided as-is with no guarantee of accuracy for professional, medical, or financial use.

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Use of Service

CalkHub provides free online calculator tools for informational and educational purposes. You may use the Service for personal, non-commercial purposes. You agree not to:

  • Use the Service for any unlawful purpose
  • Attempt to reverse-engineer, copy, or scrape the Service's content at scale
  • Misrepresent calculator results as professional advice
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3. Use Licence

CalkHub grants you a limited, non-exclusive, non-transferable, revocable licence to access and use the Site for personal, non-commercial purposes. Under this licence you may not:

  • Reproduce, duplicate, or exploit any part of the Site without express written permission.
  • Use automated tools to scrape, crawl, or bulk-download content.
  • Attempt to bypass any security measures or access restrictions.
  • Use the Site in any manner that could damage, disable, overburden, or impair it.
  • Frame or embed the Site in another website without written permission.
  • Impersonate CalkHub or misrepresent your affiliation with us.
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No Guarantee of Mathematical Accuracy

IMPORTANT: CalkHub calculators are provided for general informational and educational purposes only. While we endeavour to ensure our formulas are accurate and up-to-date, we make NO WARRANTY, EXPRESS OR IMPLIED, regarding the mathematical accuracy, completeness, or fitness of our calculator results for any particular purpose.

You acknowledge and agree that:

  • Calculator results may contain errors, rounding differences, or be based on simplified models that do not reflect your exact circumstances
  • Formula inputs, assumptions, and results can vary based on jurisdiction, individual circumstances, and factors not captured by the calculator
  • Results from our financial calculators (including Mortgage, Loan, and Compound Interest tools) do NOT constitute financial, investment, tax, or legal advice and should not be relied upon as such
  • Results from our health calculators (including BMI, Calorie/TDEE, and Ideal Weight tools) do NOT constitute medical, nutritional, or clinical advice and are not a substitute for professional medical consultation
  • You should always verify important calculations independently and consult a qualified professional (financial advisor, doctor, engineer, etc.) before making significant decisions based on any calculator output

CalkHub, its owners, and contributors shall not be liable for any loss, damage, or harm arising from your reliance on calculator results.

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4. Disclaimer of Warranties

THE SITE AND ITS CONTENT ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. CalkHub EXPRESSLY DISCLAIMS ALL WARRANTIES INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

We do not warrant that: (a) the Site will be uninterrupted or error-free; (b) defects will be corrected; (c) calculator results are accurate enough for professional use; or (d) the Site is free of harmful components.

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Intellectual Property

All content, design, code, and tools on CalkHub are the intellectual property of CalkHub unless otherwise stated. You may not reproduce, distribute, or create derivative works without explicit written permission.

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5. No Professional Advice

CalkHub tools and content are for general informational and educational purposes only and do not constitute professional advice of any kind.

  • Health tools (BMI, calorie, ideal weight calculators, etc.) do not constitute medical advice. Always consult a qualified healthcare professional before making health decisions.
  • Finance tools (mortgage, loan, investment calculators, etc.) do not constitute financial advice. Always consult a qualified financial adviser before making financial decisions.
  • Legal tools or information do not constitute legal advice.
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Third-Party Services

CalkHub uses third-party services including Google Analytics for analytics and Google AdSense for advertising. These services have their own terms and privacy policies. Your use of CalkHub constitutes agreement with these services' terms where applicable.

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6. Limitation of Liability

To the maximum extent permitted by applicable law, CalkHub, its owners, employees, and affiliates shall not be liable for any indirect, incidental, special, consequential, or punitive damages — including loss of profits, data, or goodwill — arising from your use of or inability to use the Site. In no event shall our total liability exceed the greater of $100 USD or the amount you paid to access the Site in the twelve months preceding the claim.

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Limitation of Liability

To the fullest extent permitted by law, CalkHub and its operators shall not be liable for any direct, indirect, incidental, special, consequential, or punitive damages arising from your use of the Service or reliance on any information provided therein.

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7. Intellectual Property

All Site content — including text, graphics, logos, tool designs, and code — is the intellectual property of CalkHub and is protected by applicable copyright and trademark laws. You may not reproduce, distribute, or create derivative works from Site content without our prior written consent.

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Changes to Terms

We reserve the right to update these Terms of Service at any time. Changes will be posted on this page with an updated date. Continued use of the Service after changes constitutes acceptance of the new terms.

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8. Advertising

CalkHub displays advertisements served by Google AdSense and potentially other networks. Advertisements are clearly presented as such. CalkHub is not responsible for the content of advertisements or the products/services they promote. By using the Site you consent to the display of advertisements.

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9. Third-Party Links

The Site may contain links to third-party websites. These links are provided for convenience only. CalkHub does not endorse and is not responsible for the content, privacy policies, or practices of any third-party websites.

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10. Modifications

CalkHub reserves the right to modify these Terms at any time. We will update the "Last updated" date on this page when we do. Your continued use of the Site after changes are posted constitutes acceptance of the revised Terms.

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11. Governing Law

These Terms shall be governed by and construed in accordance with applicable law. Any dispute arising under these Terms shall be resolved exclusively in the courts of the relevant jurisdiction. You irrevocably submit to the personal jurisdiction of those courts.

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12. Contact

Questions about these Terms? Contact us via our Contact page and we will respond within 5 business days.