BMI Calculator - Find Your Body Mass Index

Quickly assess your weight status with our free Body Mass Index (BMI) calculator. BMI is a widely used screening tool that helps determine if your weight is in a healthy range for your height. Understanding your BMI is a great first step toward achieving your health and wellness goals.

Simply enter your details, and we'll instantly calculate your BMI and show you where you fall on the official weight status categories. Check your BMI today to better understand your health!

Note: For the most accurate health assessment, please consult a medical professional. This calculator offers general insights and is not a replacement for individualized medical guidance.

Calculate Your BMI
Enter your height and weight to get your BMI and health category (Metric units: cm)

What is BMI? - Simple Explanation

BMI (Body Mass Index) is a simple measurement that helps determine whether your weight is healthy for your height. It’s a quick screening tool to assess if you’re underweight, normal weight, overweight, or obese. While BMI doesn’t measure body fat directly, it provides a useful estimate for most people.

How is BMI Calculated?

Curious about the math behind the magic? The BMI formula is straightforward.

Metric Formula:

BMI = weight (kg) / [height (m)]²

  • Example: If you weigh 70 kg and are 1.75 m tall:
    • BMI = 70 / (1.75 * 1.75)
    • BMI = 70 / 3.0625
    • Your BMI is 22.9

Our BMI calculator does all this work for you in a fraction of a second!

BMI Chart & Categories for Adults

Once you have your number, you can use this standard BMI chart to see where you fall. These categories are recognized by the World Health Organization (WHO).

BMI CategoryBMI Range
UnderweightBelow 18.5
Normal Weight18.5 – 24.9
Overweight25.0 – 29.9
Obese30.0 and above

* This chart applies to adults aged 20 and older