Estimated body surface area

Calculate estimated body surface area using the values and assumptions you provide.

Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.

Method and assumptions

Method version 1.0.0 · Updated October 18, 2026

Calculate

Formula: Body surface area = √(height(cm) × weight(kg) / 3600)

Calculate estimated body surface area using the values and assumptions you provide.

Results depend on the assumptions entered; verify professional or safety-critical decisions independently.

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript

const heightCm = 170, weightKg = 65;
console.log(Math.sqrt(heightCm * weightKg / 3600)); // Mosteller estimate, m²

TypeScript

const heightCm = 170, weightKg = 65;
const bsa: number = Math.sqrt(heightCm * weightKg / 3600);
console.log(bsa); // m² estimate

Python

import math
print(math.sqrt(170 * 65 / 3600))  # Mosteller BSA in m²

Java

System.out.println(Math.sqrt(170.0 * 65 / 3600)); // m² estimate

Console.WriteLine(Math.Sqrt(170.0 * 65 / 3600)); // m² estimate