What is a healthy BMI range?
For most adults, a healthy BMI is between 18.5 and 24.9.
Professional Grade
BMI Calculator
Check your Body Mass Index (BMI) and weight category online using Metric or Imperial units with our BMI Calculator. Instantly assess your health based on official WHO guidelines—fast, accurate, and private.
About This Tool
Easily calculate your Body Mass Index (BMI) using our fast, private, and accurate BMI Calculator. Instantly determine if you are underweight, normal, overweight, or obese based on WHO and CDC guidelines. This tool is ideal for adults, parents, and fitness enthusiasts who want to monitor health, set goals, and reduce risks related to weight. Supports both Metric and Imperial units, and works entirely in your browser for maximum privacy. No registration or data storage required—just quick, reliable results for a healthier you.
Key Features
What makes this tool special
Calculate BMI using Metric or Imperial units
Instantly assess weight category based on WHO guidelines
Supports adults and children
Accurate, private, and browser-based
No registration required
Quick Guide
Master this tool in seconds
Select between Metric (cm/kg) or Imperial (ft/lbs) units.
Enter your height and weight accurately.
Click 'Get BMI Result' to see your score.
Review the colored classification chart to understand your category.
Common Questions
Everything you need to know