Health

BMI Calculator.

Calculate your Body Mass Index instantly. All calculations happen in your browser — nothing is stored or sent to a server.

Standards

BMI Categories

Underweight< 18.5

Normal weight18.5 – 24.9

Overweight25 – 29.9

Obese (Class I)30 – 34.9

Obese (Class II)35 – 39.9

Obese (Class III)≥ 40

Note: BMI is a screening tool, not a diagnostic. Consult your healthcare provider for a full health assessment.

Overview

About BMI.

Body Mass Index (BMI) is a simple calculation using height and weight. While it doesn't measure body fat directly, it's a useful screening tool for weight categories. Normal BMI ranges vary slightly by age and sex — your ideal BMI may differ based on muscle mass, bone density, and overall body composition.

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