BMI Calculator

Online BMI Calculator

Calculate Body Mass Index (BMI) to estimate your body fat ratio and check weight categories.

kg
cm
lbs
ft
in
Your BMI Score
24.2
15 (Under) 18.5 (Normal) 25 (Over) 30 (Obese) 35
Category: Normal Weight
Healthy Weight Range: 53.5 kg - 72.0 kg
Features

Why Use BMI Calculator?

Estimate your body fat ratio and check weight categories client-side.

⚖️

Dual Unit Support

Easily switch between Metric (kilograms and centimeters) and Imperial (pounds, feet, and inches) calculation units.

Dynamic Score Update

Instantly recalculates and renders your BMI score as you adjust weight or height sliders.

📊

Interactive Status Gauge

Visual color-coded scale gauge highlights where you fall on the standard body weight classifications.

🎯

Healthy Weight Target

Displays the recommended target weight range matching your specific height based on WHO standards.

🔒

Secure & Private context

Calculates variables entirely client-side in the browser. We never transmit or store your personal health data.

📱

Fully Responsive

Resizes cleanly across any viewport, optimized for smooth sliding on touch screens and mobile displays.

Frequently Asked Questions

BMI is a simple calculation using a person's height and weight. The formula is BMI = kg/m², which provides an estimate of body fat.

According to the World Health Organization (WHO), a BMI between 18.5 and 24.9 is considered normal/healthy weight.

Not always. BMI does not distinguish between muscle mass and fat weight. Since muscle is denser, fit individuals may register high BMIs.

You don't need to do any manual conversions! Our calculator handles all unit translations under the hood instantly.

Since BMI is calculated relative to height squared, taller individuals naturally have higher target weight ranges.

This specific tool is designed for adults (ages 20 and older). Children's BMI categories require comparison against growth percentiles.
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