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GFR (MDRD 4-Variable) Calculator

Estimated GFR from creatinine, age, sex, and race.

Estimates GFR using the 4-variable MDRD formula: eGFR = 175 × (Scr)^−1.154 × (Age)^−0.203 × 0.742 (if female) × 1.212 (if Black).

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

mg/dL
years

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

175 × Scr^−1.154 × Age^−0.203 × sex_factor × race_factor

In depth

Estimates GFR using the 4-variable MDRD formula: eGFR = 175 × (Scr)^−1.154 × (Age)^−0.203 × 0.742 (if female) × 1.212 (if Black).