Terms of Use & Disclaimer

Last updated: July 16, 2026

1. Acceptance of Terms

By accessing or using OmniCalc.us (the “Site”), you agree to be bound by these Terms of Use. If you do not agree with any part of these terms, please do not use the Site. We may update these terms from time to time; continued use of the Site after changes constitutes acceptance of the revised terms.

2. Nature of the Service

OmniCalc.us provides free online calculators and accompanying educational articles across finance, health, mathematics, taxes, construction, digital marketing, and other topics. All tools are provided for general informational and educational purposes only.

3. No Professional Advice

Nothing on this Site constitutes financial, investment, tax, legal, medical, nutritional, engineering, or other professional advice. Calculator results are estimates based on the figures you enter and simplified standard formulas; they do not account for your complete personal circumstances. Always consult a qualified professional — such as a licensed financial advisor, accountant, physician, or engineer — before making decisions based on any result from this Site.

4. Accuracy of Results

We verify our formulas against authoritative sources and test worked examples for correctness, but we make no warranty that any calculation, article, or other content is accurate, complete, or up to date. Tax rates, interest rates, medical guidelines, and regulations change frequently and vary by jurisdiction. Results may differ from figures provided by banks, government agencies, healthcare providers, or other authoritative sources, and those sources should always take precedence.

5. Limitation of Liability

To the maximum extent permitted by law, OmniCalc.us and its operators shall not be liable for any direct, indirect, incidental, consequential, or special damages arising out of or in connection with your use of — or inability to use — the Site or any results it produces, even if advised of the possibility of such damages. You use the Site entirely at your own risk.

6. Intellectual Property

All content on this Site — including calculator implementations, articles, design, and branding — is the property of OmniCalc.us unless otherwise stated. You may use the calculators freely for personal and commercial purposes and link to any page, but you may not scrape, republish, or redistribute substantial portions of the Site's content without permission.

7. Advertising

The Site is supported by advertising, including ads served by Google AdSense. Ad content is provided by third parties, and the appearance of an advertisement does not constitute an endorsement by OmniCalc.us. See our Privacy Policy for details on advertising cookies and how to opt out of personalized ads.

8. Acceptable Use

You agree not to use the Site in any way that could disable, overburden, or impair it, including automated bulk requests, nor to attempt to interfere with its security or availability.

9. Third-Party Links

Articles on this Site link to external resources (such as government and educational websites) for reference. We are not responsible for the content, accuracy, or practices of third-party sites.

10. Contact

Questions about these terms can be sent to support@omnicalc.us or submitted through our Contact page.