BMI Calculator
Ready when you are
Enter your weight and height above to calculate your body mass index.
Check if your weight is healthy for your height with our free BMI Calculator.
About this Tool
Do you want to know if you are at a healthy weight? Our Body Mass Index (BMI) calculator can help!
It compares your weight to your height to give you a simple health score. It is free, fast, and completely private.
Your BMI is a useful starting point for understanding your overall health and fitness. By simply entering how tall you are and how much you weigh, this tool calculates your score and tells you which category you fall into, such as underweight, normal weight, or overweight.
Because everything is calculated right on your screen, your personal health information is never stored or shared with anyone.
How to Use
Choose how you want to measure (like Feet/Inches or Centimeters).
Type in how tall you are.
Type in how much you weigh.
Click the Calculate button.
Read your score to see if you are in a healthy range.
The Formula
The math is simple: the tool divides your weight by your height. If you use pounds and inches, it multiplies the final number by 703 to give you the correct score.
Examples
Frequently Asked Questions
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