This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.

Fluid balance

Intake minus output over a period – with urine output in ml/kg/h and balance in % of body weight

Details

Body weight (kg)

Balance period (Hours)

Intake

Enteral (oral, tube) (ml)

Intravenous (infusions, medications) (ml)

Other intake (ml)

Output

Urine (ml)

Stool / vomiting (ml)

Drains / tubes / blood loss (ml)

Insensible losses (estimate) (ml)

If included in the balance; otherwise leave empty.

Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.

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Sources

KDIGO Clinical Practice Guideline for Acute Kidney Injury (Kidney Int Suppl 2:1–138) – Table 2: Staging of AKI Kidney Disease: Improving Global Outcomes (KDIGO) Acute Kidney Injury Work Group, 2012. Guideline (freely accessible)
Neonatal acute kidney injury (Pediatrics 136:e463–e473) – Table 1: Neonatal modified KDIGO criteria Selewski DT, Charlton JR, Jetton JG, et al., 2015. Review article / consensus (freely accessible)

Scientific basis last reviewed: September 2026.

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Note

Calculation aid for healthcare professionals. Percentiles and z-scores describe the position of a measured value in the reference population; clinical assessment remains with the treating physician.