eGFR Calculator

The eGFR Calculator helps you Estimate kidney filtration using the 2021 CKD-EPI creatinine equation. Enter your own values to get an instant result, then use the graph and table to understand how the inputs affect the answer. Calculations run in your browser and are not sent to CalcifyNow.

Enter Age, Serum creatinine (mg/dL), Sex. The calculator validates the inputs and updates the answer, chart and breakdown without sending your values to the server.

Uses the 2021 CKD-EPI creatinine equation without a race coefficient. Educational estimate only.

The result is recalculated whenever you change an input. Use consistent units throughout and keep the displayed rounding in mind when comparing with another source.

Use the calculator's pre-filled values as a worked example:

• Age: 45
• Serum creatinine (mg/dL): 1
• Sex: Male

Change one value at a time to see how it affects the result, graph and table.

Read the main result together with the supporting values. The graph shows the relationship visually, while the table makes each step easier to inspect.

• Understand a personal measurement or target.
• Compare different inputs without saving personal data.
• Use the estimate to prepare better questions for a qualified professional.

This calculator cannot account for medical history, diagnosis, medication or every individual factor. It is informational and is not medical advice.