Calculators
Weight-based neonatal calculations.
Educational decision support only. This is not a medical device or substitute for clinical judgment. Always confirm with your unit's protocol and applicable guidelines before clinical action.
Patient parameters
Patient parameters
Used across all calculatorsCorrected GA
30w2d PMA
Weight
1.250 kg
Calculator categories
Airway & Resuscitation
ETT size
3.0 mm
Based on GA
ETT depth
7.3 cm at upper gum
NRP 8th ed.: 6 + weight (kg)
Surfactant (poractant)
3.13 mL (2.5 mL/kg)
200 mg/kg first dose
Epinephrine IV
0.01–0.04 mg (0.13–0.38 mL of 1:10,000)
0.01–0.03 mg/kg IV
Vascular Access
UVC depth
7.4 cm
UAC depth ÷ 2 + 1
UAC depth
12.8 cm
Proper placement at T6–T9: 3 × wt(kg) + 9
Fluids & Nutrition
Feed interval
GIR
6.7 mg/kg/min
Target preterm 4–8, term 6–10
Maintenance fluids
18.8 mL q3h
120 mL/kg/day × 1.250 kg = 150 mL/day
Calories
96 kcal/day (77 kcal/kg/day)
Carb 41 + Protein 18 + Lipid 38 kcal · Dex 3.4, Pro 4, Lipid 10 kcal/g
Electrolytes
Bicarb deficit
3.8 mEq NaHCO₃
0.5 × wt(kg) × (goal − measured HCO₃). Correct half over 8–12h; recheck gas. Address underlying cause first.
Na deficit (hyponatremia)
6.1 mEq Na to reach 135
0.7 × wt(kg) × (goal − Na). Correct ≤0.5 mEq/L/hr (≤10–12 mEq/L/day) to avoid osmotic demyelination.