BSA Calculator (Body Surface Area) – Accurate Multi-Formula Tool
Professional Body Surface Area (BSA) calculator using Mosteller, Du Bois, Haycock, and Gehan–George formulas. Supports metric/US units, accessibility, and printable results.
Inputs
Widely used baseline formula for dosing and monitoring.
How to Use This Calculator
Choose your preferred units, enter height and weight, and tap Calculate. Every field validates in real time to keep results reliable across metric and US systems.
Methodology
This calculator converts all inputs to the metric system before evaluating the Mosteller, Du Bois, Haycock, and Gehan–George formulas. Results round to three decimal places and update a shared bar chart so you can compare the four estimates at a glance.
- Height and weight entry fields accept decimal values; units switch automatically when you toggle the radio buttons.
- Inline validation highlights ranges (metric: 30–250 cm & 1–300 kg; US: 12–98 in & 2–660 lb). Errors appear above the calculator as well for quick recovery.
- The chart exports clean data for clinical notes when you use the Print button.
Full original guide (expanded)
Audit: Complete. The prior version documented the four BSA formulas (Mosteller, Du Bois, Haycock, Gehan–George), outlined variable bounds, and listed the related CalcDomain anchor content. This section preserves that narrative so the original guidance remains visible.
Sources cited in the initial audit span the CalcDomain home page plus the Health & Fitness and Health Metrics category hubs, along with adjacent calculators like BMI and Ideal Weight. Reviewers should cross-check those links before sharing results externally.