GFR Calculator

eGFR estimates kidney filtration from serum creatinine, age and sex; it is an estimate and should be interpreted with clinical context. Formula: CKD-EPI 2021 uses 142 × min(Scr/k,1)^α × max(Scr/k,1)^−1.200 × 0.9938^Age × sex factor.

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Work out GFR

eGFR estimates kidney filtration from serum creatinine, age and sex; it is an estimate and should be interpreted with clinical context.

Formula: CKD-EPI 2021 uses 142 × min(Scr/k,1)^α × max(Scr/k,1)^−1.200 × 0.9938^Age × sex factor.

Enter age, body measurements, dates, or activity choices exactly as requested. These calculators estimate a result from the inputs rather than directly measuring a physical condition.

Repeat the calculation with the same values to confirm the output, then review the unit and method before interpreting the number.

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