Urine output rate + KDIGO oliguria flag
Weight-indexed urine output = volume/(interval*weight) in mL/kg/hr; <0.5 flags oliguria.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Total urine volume
- 120 mL
- Collection interval
- 4 hr
- Weight
- 60 kg
Result: Urine output 0.5 mL/kg/hr — at the KDIGO oliguria threshold.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Total urine volume
- Collection interval
- Weight
How this is calculated
KDIGO AKI Work Group. KDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney Int Suppl. 2012;2(1):1-138. Urine-output AKI criteria: <0.5 mL/kg/hr x6-12 h (Stage 1/2); <0.3 x24 h or anuria x12 h (Stage 3). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.