Free BMI Calculator – Calculate Your Body Mass Index Online
Quickly find out your Body Mass Index (BMI) using our free and accurate BMI Calculator. Simply enter your height and weight, and instantly learn whether you're underweight, normal weight, overweight, or obese, based on the World Health Organization (WHO) health standards.
This tool works for men, women, and teens, and helps you understand how your weight compares to your height — giving you a reliable starting point for fitness planning, diet improvement, and weight management.
BMI Calculator
Frequently Asked Questions
BMI (Body Mass Index) is a health measurement that compares your weight to your height. It helps determine whether your weight is healthy or may pose health risks like diabetes, heart issues, or nutritional deficiencies.
BMI is a general screening tool, not a medical diagnosis. It may not fully reflect athletes, children, seniors, or those with high muscle mass, but it is widely used as a quick health indicator.
A healthy BMI falls between 18.5 and 24.9, according to the World Health Organization.
You can reduce BMI through balanced diet, regular exercise, hydration, and lifestyle changes. Consulting a nutritionist or doctor can provide a personalized plan.
Yes, but children’s BMI is interpreted using age and gender percentile charts. For children, consult a pediatric growth chart for the most accurate evaluation.