What Is BMI?

Body Mass Index (BMI) is a simple calculation that helps you understand whether your weight is healthy for your height.

It is widely used by:

Doctors

Fitness trainers

Health organizations

It gives a quick overview of:

Underweight

Normal weight

Overweight

Obesity levels

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BMI Formula

BMI uses your height and weight:

BMI = Weight (kg) / Height² (m²)

Example:

Weight: 70 kg

Height: 1.75 m

BMI = 70 ÷ (1.75 × 1.75) = 22.86

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BMI Range Chart

BMI Classification

< 18.5 Underweight

18.5–24.9 Normal weight

25–29.9 Overweight

30–34.9 Obese (Class 1)

35–39.9 Obese (Class 2)

≥ 40 Severe Obesity

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Why BMI Matters

Helps estimate body fat

Shows weight-related health risks

Used for fitness goals

Recommended by WHO

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Limitations of BMI

BMI does not consider:

Muscle mass

Body fat percentage

Waist size

Still, it is a good starting point for general health assessment.

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Free BMI Calculator

To avoid manual calculations, use our automatic tool:

👉 BMI Calculator (https://webtoolspace.org/bmi-calculator)

Enter your height & weight → get instant BMI + category.

category (https://webtoolspace.org/health-calculators)

tools page(https://webtoolspace.org/online-tools)

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Conclusion

BMI is an easy and effective way to track your health.

Use our free calculator for instant and accurate results anytime.

other blog post (https://webtoolspace.org/how-to-calculate-gst-online-guide-free-gst-calculator).