Free Online GFR calculator
CKD-EPI 2021 estimated kidney function (eGFR) and stage. Results are estimates for planning only.
eGFR
104 mL/min/1.73m²
- Stage
- G1 (normal or high)
General estimate only — not medical advice.
Log in to save this operation.
Tasks
Get an estimate
Enter your details; results update as you type.
How to use
- Open the tool.
- Fill in the fields (metric units unless noted).
- Read the results.
FAQ
What does GFR calculator do?
CKD-EPI 2021 estimated kidney function (eGFR) and stage.
How do I get an estimate?
Enter your details; results update as you type.
How do I use GFR calculator?
Open the tool. Fill in the fields (metric units unless noted). Read the results.
Is my data private?
Yes. Numbers and text you enter stay on this device. Results are local estimates only.
Anything else I should know?
For information only — not medical advice.