Urine Albumin/Protein-to-Creatinine Ratio
Spot urine albumin- and protein-to-creatinine ratios with the KDIGO A-stage and an estimated 24-hour excretion (2024 CKD guideline).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Urine albumin
- 30 mg/dL
- Urine creatinine
- 100 mg/dL
Result: UACR 300 mg/g (A2) reading the albumin as mg/dL; estimated albumin excretion ~300 mg/day.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Ratio
- mg/g = analyte (mg/dL) / urine creatinine (mg/dL) x 1000; with ~1 g creatinine/day it also estimates 24-hour excretion (mg).
- A-stage
- A1 < 30, A2 30-300, A3 > 300 mg/g (matches the CKD-staging cutoffs); confirm an abnormal ratio on repeat.
What you enter
- Urine albumin
- Urine albumin unit
- Urine protein (for the UPCR)
- Urine creatinine
How this is calculated
Spot urine albumin/protein-to-creatinine ratio; albuminuria categories per the 2024 international CKD guideline. Kidney Int. 2024;105(4S):S117-S314. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
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