Arithmetic support
Urine output calculator
Calculate urine output in mL/kg/hr from measured urine volume, body weight, and collection time. This transparent arithmetic result does not classify output, identify a cause, or direct treatment.
Safety checks
- This tool supports calculation and education only.
- It does not classify output, diagnose, prescribe, or replace clinical judgment.
- Measurement accuracy depends on proper collection technique.
- Verify interpretation against current references and the full clinical context.
Basis and limits
- Formula: Urine output (mL/kg/hr) = total urine volume (mL) / (body weight (kg) × collection time (hr)).
- Units: enter measured volume in mL, body weight in kg, and the collection period in hours.
- Scope: this tool provides arithmetic support only. It does not apply diagnostic thresholds, identify a cause, or select treatment.
- Data: the calculation does not create or retain a patient record.
Formula audit trail
Calculation steps will appear here for verification.
Last reviewed: May 2026
Scope: arithmetic support only. Verify measurement technique and interpretation against current veterinary references before clinical use.