BMI Calculator – Check Your Body Mass Index Instantly

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BMI (Body Mass Index) Calculator

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BMI Classification Table

BMI Range Category
Less than 18.5Underweight
18.5 – 24.9Normal weight
25 – 29.9Overweight
30 and aboveObese

BMI (Body Mass Index) Calculator

Use this free and easy-to-use BMI Calculator to check whether your body weight is healthy based on your height. This tool supports both metric units (kilograms and centimeters) and imperial units (pounds and inches), making it suitable for users worldwide. BMI is a widely used indicator to identify whether a person is underweight, normal, overweight, or obese.

What is BMI?

BMI (Body Mass Index) is a simple numerical value of your weight in relation to your height. It helps classify your body weight into categories such as underweight, normal, overweight, and obese. While BMI does not measure body fat directly, it provides a useful estimate that is widely used in health assessments.

How to Use the BMI Calculator

  1. Select the unit type: Metric (kg/cm) or Imperial (lbs/inches).
  2. Enter your weight and height.
  3. Click the "Calculate BMI" button.
  4. View your BMI result and health classification instantly.

BMI Classification Table

BMI RangeCategory
Less than 18.5Underweight
18.5 – 24.9Normal weight
25 – 29.9Overweight
30 and aboveObese

Why is BMI Important?

Tracking your BMI helps you understand your risk level for conditions like heart disease, diabetes, and high blood pressure. While it's not a complete diagnostic tool, it is a great starting point for managing your health and discussing your weight goals with your doctor or nutritionist.

Frequently Asked Questions

Is BMI accurate?

BMI gives a good general idea of your body weight in relation to your height, but it may not account for muscle mass, age, gender, or body composition. Athletes and muscular individuals may have a higher BMI without being overweight.

Can I use BMI for children?

BMI for children and teens is calculated differently and is based on age and sex percentiles. This calculator is designed for adults (18+ years).

Start Tracking Your Health Today

Use the calculator above and take the first step toward a healthier lifestyle. Bookmark this page or share it with friends and family who want to understand their BMI and health better.