AKIN Acute Kidney Injury Staging Calculator

Stage acute kidney injury using AKIN criteria: Stage 1 (Cr x1.5-1.9 or +0.3 mg/dL, UO < 0.5 mL/kg/h for 6h+), Stage 2 (Cr x2-2.9, UO x12h), Stage 3 (Cr x3 or RRT, UO x24h/anuria).

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Stage acute kidney injury using AKIN criteria: Stage 1 (Cr x1.5-1.9 or +0.3 mg/dL, UO < 0.5 mL/kg/h for 6h+), Stage 2 (Cr x2-2.9, UO x12h), Stage 3 (Cr x3 or RRT, UO x24h/anuria)

Each component has a specific meaning:

  • AKIN criteria: Stage 1 (Cr x1 — The akin criteria: stage 1 (cr x1 recorded for the scenario being assessed.

Note: Interpret the akin staging result against the thresholds and context described above.

How to Use

Enter the AKIN criteria: Stage 1 (Cr x1 for the scenario you are assessing. Stage acute kidney injury using AKIN criteria: Stage 1 (Cr x1.5-1.9 or +0.3 mg/dL, UO < 0.5 mL/kg/h for 6h+), Stage 2 (Cr x2-2.9, UO x12h), Stage 3 (Cr x3 or RRT, UO x24h/anuria). Use the akin staging result to inform your calculation.

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Frequently Asked Questions