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GFR kidney function calculator
Estimate your kidney filtration rate (eGFR) and its stage from creatinine, age and sex with the CKD-EPI 2021 equation.
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About GFR kidney function calculator
Estimate glomerular filtration rate, the main measure of kidney function, from serum creatinine, age and sex using the CKD-EPI 2021 equation, which no longer includes a race factor. A result of 90 or more is normal, and under 60 for three months suggests chronic kidney disease. Not a diagnosis.
How to use GFR kidney function calculator
- Enter your numbers above.
- The result updates instantly as you type.
- Change any value to compare different cases.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
What eGFR number means kidney disease?
An eGFR below 60 lasting more than three months is the usual threshold for chronic kidney disease. Only a doctor can diagnose it.
Is GFR kidney function calculator free?
Yes. GFR kidney function calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.