BSA-Based Dose Calculator (mg/m²)
Calculates patient Body Surface Area (Mosteller m²) and required drug dose (mg) for mg/m² regimens.
⚠️ Educational Calculation & Clinical Safety Safeguard: High-alert chemotherapy and immunosuppressant BSA doses require independent double-check by two pharmacists. Educational calculations do not replace clinician assessment, patient-specific laboratory monitoring, or institutional prescribing protocols.
Interactive Calculator
Allowed physiological/compounding range: 30 to 250 cm
Allowed physiological/compounding range: 1 to 300 kg
Allowed physiological/compounding range: 0.1 to 5000 mg/m²
Calculated Output (mg (with BSA in m²))
---
---
Step-by-Step Mathematical Derivation & Explanation:
Validated Formula & Conversion Rules
BSA (m²) = √([Height(cm) × Weight(kg)] / 3600); Total Dose (mg) = BSA (m²) × Dose (mg/m²)Worked Clinical Example
Height 170 cm, Weight 68 kg: BSA = √(11560 / 3600) = √3.2111 = 1.792 m². At 100 mg/m², Total Dose = 179.2 mg.
Rounding Rules, Assumptions & Source References
- Rounding Rule: Round BSA to 2 decimal places (m²) and cytotoxic/specialty doses per institutional protocol.
- Clinical Assumptions & Limitations: Validated only within the stated physiological input boundaries. For paediatric, renal (Cockcroft-Gault), and critical-care infusion calculations, always cross-check against official product labelling and institutional guidelines.
- Source References: Indian Pharmacopoeia (IP 2022), National Formulary of India (NFI), British National Formulary (BNF), and NCBI Bookshelf Clinical Pharmacology Compendia.