Paediatric Weight-Based Dose & Ceiling Gate Calculator
Calculates paediatric single and daily dose (mg) with automatic adult-ceiling safety capping.
⚠️ Educational Calculation & Clinical Safety Safeguard: Never use household teaspoons for paediatric liquids; verify weight in kg (not pounds). Educational calculations do not replace clinician assessment, patient-specific laboratory monitoring, or institutional prescribing protocols.
Interactive Calculator
Allowed physiological/compounding range: 1 to 100 kg
Allowed physiological/compounding range: 0.01 to 500 mg/kg/dose
Allowed physiological/compounding range: 1 to 12 doses/day
Allowed physiological/compounding range: 1 to 10000 mg
Calculated Output (mg/dose (capped) & mg/day)
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Step-by-Step Mathematical Derivation & Explanation:
Validated Formula & Conversion Rules
Raw Dose = Weight (kg) × mg/kg/dose; Recommended Dose = min(Raw Dose, Adult Max Single Dose)Worked Clinical Example
18 kg child at 15 mg/kg/dose q6h (4/day): Single Dose = 18 × 15 = 270 mg (below 1000 mg cap); Daily = 1080 mg/day.
Rounding Rules, Clinical Interpretation, Assumptions & Known Limitations
- 1. Purpose: Calculates paediatric single and daily dose (mg) with automatic adult-ceiling safety capping.
- 2. Required Inputs & Validated Units: Child Body Weight (kg, range 1–100), Paediatric Dose per kg (mg/kg/dose, range 0.01–500), Doses per Day (doses/day, range 1–12), Adult Max Single Dose Ceiling (mg, range 1–10000)
- 3. Output Unit:
mg/dose (capped) & mg/day - 4. Result Interpretation Notes: Automatically caps weight-based paediatric doses at the entered adult single-dose maximum ceiling.
- 5. Rounding Guidance: Use calibrated oral syringe for volumes < 5 mL.
- 6. Mathematical & Clinical Assumptions: Assumes normal paediatric hepatic and renal maturation for age/weight.
- 7. Known Limitations & Contraindications to Formula Use: Neonates (<28 days) and premature infants have immature glucuronidation and GFR; always consult neonatal-specific formularies.
- 8. Supporting Compendial & Clinical References: Indian Pharmacopoeia (IP 2022), National Formulary of India (NFI), British National Formulary (BNF), and NCBI Bookshelf Clinical Pharmacology Compendia.