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BMI Calculator

Use this BMI Calculator to quickly check your Body Mass Index using your height and weight. It helps you understand whether your weight is in the underweight, healthy, overweight, or obesity range.

Calculate Your BMI

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Your BMI Result

Enter your height and weight to calculate your BMI and view your weight category.

Healthy weight range will appear here.
Underweight Healthy Overweight Obesity

Fast Health Check

BMI gives a quick estimate of whether your weight is suitable for your height.

Fitness Planning

You can use your BMI result as a starting point for weight management and fitness goals.

Better Awareness

Knowing your BMI can help you understand potential health risks linked with body weight.

What Is a BMI Calculator?

A BMI Calculator is an online health tool that estimates your Body Mass Index using your height and weight. BMI is commonly used to classify body weight into categories such as underweight, normal weight, overweight, and obesity.

This calculator supports both metric and imperial units, so you can enter your height in centimeters and weight in kilograms, or use feet, inches, and pounds. The result appears instantly with a simple explanation and a healthy weight range.

Important: BMI is a useful screening tool, but it does not directly measure body fat, muscle mass, bone density, or overall fitness. Athletes, pregnant women, children, and older adults may need more personalized health assessment.

How This BMI Calculator Works

  1. Choose your preferred unit system: metric or imperial.
  2. Enter your height and weight in the required fields.
  3. Click the calculate button to generate your BMI score.
  4. Review your BMI category and healthy weight range.
  5. Use the result as a general guide for health and fitness awareness.

BMI Formula

For metric units, BMI is calculated as: BMI = weight in kg / height in meters²

For imperial units, BMI is calculated as: BMI = 703 × weight in pounds / height in inches²

BMI Categories

BMI Range Weight Category Meaning
Below 18.5 Underweight Your weight may be lower than the healthy range for your height.
18.5 - 24.9 Healthy Weight Your weight is generally within the recommended range.
25 - 29.9 Overweight Your weight may be above the healthy range for your height.
30 or higher Obesity Your weight may increase the risk of weight-related health conditions.

Why Use This BMI Calculator?

This BMI Calculator is designed for quick, simple, and practical use. It gives you a clear result without complicated medical terms. Whether you are starting a fitness journey, tracking weight changes, or checking your general health status, this tool gives you a helpful first step.

Useful For

Frequently Asked Questions

What is a good BMI?
A BMI between 18.5 and 24.9 is generally considered a healthy weight range for most adults.
Is BMI accurate for everyone?
BMI is useful for general screening, but it may not be accurate for athletes, pregnant women, children, older adults, or people with high muscle mass.
Can BMI measure body fat?
No. BMI does not directly measure body fat. It only compares your weight with your height to estimate your weight category.
How often should I check my BMI?
You can check your BMI whenever your weight changes noticeably or when you are tracking a fitness or weight management plan.
Does age affect BMI?
BMI categories for adults usually stay the same, but age can affect muscle mass, fat distribution, and health risk. For children and teens, BMI should be interpreted differently.