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How it works

Calculate a GFR

Fill in the calculator fields and hit "Calculate." The GFR and stage of CKD will show up along with some stats on your calculator activity.


Save the calculation

This stores the calculation in your Web Account.


View past calculations


Chart GFR calculations


Chart view of saved GFRs

You can see a chart of stored GFRs for a time frame you choose.


Print out all GFRs in a table or remove rows


Table view of saved GFRs

Made a mistake? Select a remove a row that you want to delete.


Bring the GFR print out to your doctor


Sample print out

You can print out a convenient table of GFRs for a doctor to review.

Ready to get started?

This site is for informational purposes only and is not intended to be a substitute for medical advice from a physician. Please check with a physician if you need a diagnosis and/or for treatments as well as information regarding your specific condition. If you are experiencing urgent medical conditions, call 9-1-1