BMI & Body Composition Calculator

Calculate Body Mass Index (BMI), healthy weight range, Prime Index, and health risk status based on WHO guidelines.

Configurable Calculation Inputs

Measurement System: select (Default: imperial)
Height (Feet): number (Default: 5 ft)
Height (Inches): number (Default: 10 in)
Height (cm): number (Default: 178 cm)
Weight (lbs): number (Default: 165 lbs)
Weight (kg): number (Default: 75 kg)
Biological Sex: select (Default: male)
Age: number (Default: 30 yrs)

Mathematical Formula: Body Mass Index (Quetelet Index) Formula

          BMI = weight (kg) / [height (m)]^2 = 703 * weight (lbs) / [height (in)]^2
        

BMI evaluates weight relative to height and classifies individuals into standard World Health Organization categories.

Comprehensive Guide & Context

Understanding WHO BMI Categories

The World Health Organization classifies a BMI of 18.5 to 24.9 as the lowest risk category for cardiovascular disease and metabolic syndromes. However, visceral fat distribution is also a critical indicator.

Worked Calculation Examples

Average Height Adult Male

5 ft 10 in, 165 lbs, 30 years old.

Result: 23.7 BMI (Normal Weight)

Frequently Asked Questions

What is a good BMI for women and men?

For both adult men and women, a BMI between 18.5 and 24.9 is considered the normal, healthy range by the CDC and WHO.