About this resource

About eGFR Calculator

eGFR Calculator is an independent educational website that turns established kidney-function equations and guidance into free browser-based tools and plain-language explanations.

Publisher and purpose

The site is published and maintained by the eGFR Calculator editorial team at egfrcalculator.org. It is not a hospital, laboratory, medical practice, or government service, and it is not affiliated with KDIGO, NIDDK, the National Kidney Foundation, or the authors of the equations it implements.

Our purpose is education: helping people understand the inputs, assumptions, units, and limitations behind kidney-function estimates. The calculators do not diagnose disease, select treatment, or replace a laboratory result or a qualified clinician.

Editorial and calculator process

  • Health claims are checked against clinical guidelines, government health resources, peer-reviewed equation papers, and official medication labeling.
  • Calculator implementations are separated from explanatory copy and covered by repeatable formula tests, boundary cases, and unit-conversion tests.
  • Articles show their publication date, latest editorial review date, source list, and a visible link to this policy.
  • Material corrections are made in the page content; readers can report errors by email.

Medical review status

Unless a page names a credentialed reviewer, content on this site has received editorial and technical review but has not been individually reviewed by a physician. We state this directly so readers can judge the source appropriately.

Never delay care because of a calculator result. Rapidly changing kidney values, very low urine output, severe swelling, chest pain, shortness of breath, confusion, or other urgent symptoms require prompt professional assessment.

Primary sources

We prefer original equation publications and current guidance over unsourced summaries. Page-specific references appear with each article or tool.

Advertising and independence

Advertising may fund site operation, but advertisers do not select our topics, formulas, conclusions, or recommendations. Ads are kept visually separate from publisher content. We do not accept payment to change a calculator result or present promotional material as medical guidance.

Corrections and contact

Report a factual, calculation, accessibility, or attribution issue by email or through the contact page.

[email protected]Open the contact page

Policy last updated: September 9, 2026.