Calculator
IV Fluid Maintenance
Holliday-Segar (4-2-1) method for daily and hourly maintenance fluids in pediatric and adult patients.
4 ml/kg/hr (first 10 kg) + 2 ml/kg/hr (next 10 kg) + 1 ml/kg/hr (each kg > 20)
kg
Use actual body weight in non-obese patients. For obese adults consider using ideal body weight or capping fluid rates per local policy.
Maintenance rate
—ml / hr
24-hour total
—ml / 24 h
Enter a weight to see the calculation breakdown.