Please read these Terms of Service ("Terms") carefully before using Radcalcs at radcalcs.org (the "Site"). By accessing or using the Site, you agree to be bound by these Terms. If you do not agree with any part of these Terms, you must not use the Site.
Medical Disclaimer (Summary): All calculators on Radcalcs are for educational and informational purposes only. They do not constitute medical advice, diagnosis, or treatment. Do not rely solely on calculator results for clinical decisions. Always consult a licensed clinician. See Section 3 for the full medical disclaimer.
By accessing the Site, you represent that you have read, understood, and agree to be bound by these Terms and our Privacy Policy, which is incorporated herein by reference. These Terms constitute a legally binding agreement between you and Radcalcs.
If you are using the Site on behalf of an institution, organization, or clinical practice, you represent that you have the authority to bind that entity to these Terms, and "you" in these Terms refers to that entity.
We reserve the right to modify these Terms at any time. Changes take effect upon posting to this page with an updated date. Your continued use of the Site after any change constitutes acceptance of the revised Terms.
The Site is designed for use by:
The Site is not designed for use by members of the general public for personal health decisions. If you are a patient seeking medical guidance, please consult a licensed healthcare provider directly and do not rely on information or calculator outputs from this Site to make personal health decisions.
Radcalcs calculators are for educational and informational purposes only. They do not constitute medical advice, diagnosis, or treatment recommendations.
The calculators, scoring tools, and reference content on this Site are designed to support clinician learning and workflow. They implement published mathematical formulas derived from peer-reviewed literature and recognized clinical guidelines. However:
For the complete Medical Disclaimer, including calculator-specific limitations, see our Medical Disclaimer page.
We make significant efforts to ensure that the formulas and reference content on this Site are accurate and current with published guidelines. Our process includes implementing equations directly from primary sources, cross-checking outputs against published reference tables, and revising tools within 90 days of a published guideline update.
However, we make no warranty — express or implied — that:
Medical knowledge evolves rapidly. Guidelines are revised. Equations are updated. Threshold values change as new evidence accumulates. Users should independently verify all calculator outputs against current institutional protocols and authoritative guidelines before applying them in clinical practice.
If you identify an error in a formula, threshold, or reference value, please contact us at radbridge@polsia.app. We investigate all reported errors within 48 hours and issue corrections as warranted.
All content on this Site — including calculator implementations, interpretive guidance text, design, layout, graphics, and code — is the property of Radcalcs and is protected by applicable copyright, trademark, and intellectual property laws. Copyright 2026 Radcalcs. All rights reserved.
The underlying mathematical formulas implemented in our calculators are derived from published peer-reviewed literature and clinical guidelines, which are the intellectual property of their respective authors and organizations (e.g., KDIGO, ACR, AHA/ACC, CMS, Fleischner Society). We implement these formulas under fair use for educational purposes.
You are permitted to:
You are not permitted to:
You agree not to use the Site in any of the following ways:
To the fullest extent permitted by applicable law, Radcalcs, its operators, developers, clinical advisors, and affiliates shall not be liable for:
This limitation applies regardless of whether liability is asserted under contract, tort (including negligence), strict liability, or any other legal theory, and even if Radcalcs has been advised of the possibility of such damages.
Some jurisdictions do not allow the exclusion of certain warranties or the limitation of liability for incidental or consequential damages. In such jurisdictions, our liability is limited to the greatest extent permitted by law.
The Site and all calculators, tools, and content are provided on an "as is" and "as available" basis, without warranty of any kind, express or implied. To the fullest extent permitted by law, we disclaim all warranties, including but not limited to:
The Site may display third-party advertisements served by Google AdSense. We are not responsible for the content, accuracy, or practices of advertisers. Advertising content does not constitute an endorsement by Radcalcs of any advertiser, product, or service. We do not control which specific ads are displayed.
The Site also contains links to external websites, including journal articles, guideline documents, and clinical reference sources. These links are provided for informational purposes. We are not responsible for the content or availability of external sites.
Your use of the Site is also governed by our Privacy Policy, which describes how we collect and handle information. By using the Site, you consent to our data practices as described in the Privacy Policy.
You agree to indemnify, defend, and hold harmless Radcalcs and its operators from any claims, damages, losses, liabilities, costs, or expenses (including reasonable legal fees) arising from: (a) your use of or reliance on the Site; (b) your violation of these Terms; (c) clinical decisions you make that incorporate outputs from this Site; or (d) your violation of any third party's rights.
These Terms and any dispute arising from your use of the Site shall be governed by the laws of the United States, without regard to conflict of law provisions. Any disputes that cannot be resolved informally shall be submitted to binding arbitration in accordance with the rules of the American Arbitration Association, with proceedings conducted in English.
Notwithstanding the foregoing, either party may seek injunctive or other equitable relief in any court of competent jurisdiction to prevent the actual or threatened infringement, misappropriation, or violation of intellectual property rights.
If any provision of these Terms is found to be invalid, illegal, or unenforceable by a court of competent jurisdiction, the remaining provisions shall continue in full force and effect. The invalid provision will be modified to the minimum extent necessary to make it enforceable.
These Terms, together with our Privacy Policy and Medical Disclaimer, constitute the entire agreement between you and Radcalcs with respect to your use of the Site, and supersede all prior agreements, understandings, or representations relating to the Site.
Questions about these Terms? Identified an error in a calculator? Contact radbridge@polsia.app. We respond to all substantive inquiries within 48 hours on business days.