BMI Calculator: Body Mass Index & Healthy Weight Range

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BMI Calculator: Body Mass Index & Healthy Weight Range
Interactive Client-Side Tool • 100% Free & Fast
Your Body Mass Index (BMI)
22.9
Normal Weight
Healthy range: 18.5 – 24.9 kg/m²

Body Mass Index (BMI) is a globally recognized biometric indicator used by the World Health Organization (WHO) to classify body composition across underweight, normal, overweight, and obesity ranges. 99tools BMI Calculator supports both Metric (cm/kg) and Imperial (ft/lbs) measurements with instant healthy target guidance.

Quick Guide

How to Use BMI Calculator: Body Mass Index & Healthy Weight Range in 3-4 Simple Steps

1

Enter Height

Input your height in centimeters or feet and inches.

2

Enter Weight

Input your current body weight in kilograms or pounds.

3

Check BMI Category

Instantly discover your BMI score, category, and healthy target range.

Need Help?

Frequently Asked Questions

Everything you need to know about this tool, accuracy, formulas, and privacy.

What is considered a healthy BMI score?
According to the World Health Organization (WHO), a BMI between 18.5 and 24.9 is considered normal/healthy weight, below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or above indicates obesity.

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