Urine Output Calculator
Calculate hourly urine output (mL/kg/hr) to monitor hydration status and renal perfusion.
Input Parameters
Enter details for calculation.
Urine Output Rate
Expert Tip
Normal urine output is >0.5 mL/kg/hr. Output <0.5 mL/kg/hr for ≥6 hours defines Oliguria (AKI stage 1).
Calculation Methodology & Details
Formula
Evaluates kidney output relative to body weight and time.
Important Disclaimer
The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
How Urine Output is Assessed
Follow these steps to use this calculator:
Input Parameters
Urine volume, collection time (typically 24 hours), and weight.
Read Rate
Normal range is 0.5 - 2.0 mL/kg/hr.
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ℹ️ About this Calculation
This nephrology and urology clinical calculator evaluates renal function, electrolyte/acid-base equilibrium, urinary excretion kinetics, and urologic disease risk according to KDIGO and AUA clinical practice guidelines.
Variable Glossary
Renal & Lab Metrics
Serum creatinine, urinary sodium/urea, albumin, PSA levels, or ultrasound kidney dimensions.
Diagnostic Indexes
eGFR (CKD-EPI equation), Fractional Excretion of Sodium (FENa %), serum anion gap, and PSA doubling kinetics.
How to Calculate Step-by-Step
Step 1
Enter serum electrolytes, creatinine, or urinary excretion lab values.
Step 2
Specify patient demographic parameters (age, gender, height/weight).
Step 3
View calculated clearance rates, CKD stage classification, or acute kidney injury (AKI) differentiation.