GFR Calculator

Estimate glomerular filtration rate from serum creatinine, age, and sex as a kidney-function screening value.

Preparing GFR Calculator

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Input

Enter age, sex, and serum creatinine, and the calculator will estimate glomerular filtration rate from those clinical inputs. This tool shows the result instantly without step-by-step output.

Input summary

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How to use GFR Calculator

Provide the lab value and the matching patient details, and the calculator will estimate eGFR as a kidney-function screening number.

What this calculator is for

This calculator is for understanding a common kidney-function estimate used in clinical practice. eGFR is a screening value rather than a perfect direct measurement, and it is usually interpreted alongside urine testing, repeat labs, and the rest of the clinical picture.

Tips

Use the same creatinine unit the calculator asks for, because eGFR depends on that lab input exactly.
A trend across time is often more informative than one isolated eGFR value.
If the result is unexpected or worrying, discuss it with a qualified clinician instead of trying to diagnose kidney disease from one number alone.