BMI Calculator

Calculate your Body Mass Index and understand your weight category.

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Weight (lbs)

Height (inches)

Your BMI

24.4

Normal

Underweight:< 18.5

Normal:18.5 - 24.9

Overweight:25 - 29.9

Obese:≥ 30

Important Legal Disclaimer

For Educational and Informational Purposes Only: This calculator provides estimates and approximations based on the information you provide. Results are not exact and should not be relied upon for any official, legal, financial, medical, or professional purposes.

No Professional Advice: The calculations and information provided do not constitute financial advice, legal advice, tax advice, medical advice, or any other form of professional consultation. Always consult with qualified professionals (financial advisors, attorneys, tax professionals, healthcare providers, etc.) before making important decisions.

No Liability: By using this calculator, you acknowledge that the results are estimates only. We make no warranties or guarantees about the accuracy, completeness, or reliability of the calculations. Use of this tool is at your own risk.

This disclaimer complies with applicable U.S. federal and state laws regarding the provision of informational tools and the limitation of liability for educational resources.

Abbreviations Explained

BMI (Body Mass Index): A numerical value derived from your weight and height used to categorize body composition.

kg (Kilograms): Metric unit of mass/weight (1 kg = 2.205 pounds).

lbs (Pounds): Imperial unit of weight commonly used in the United States.

cm (Centimeters): Metric unit of length (1 inch = 2.54 cm).

Underweight: BMI below 18.5, may indicate insufficient body weight.

Normal Weight: BMI 18.5-24.9, considered healthy weight range.

Overweight: BMI 25-29.9, above normal weight range.

Obese: BMI 30 or higher, significantly above healthy weight range.

How the Calculation Works

BMI uses a simple formula based on weight and height:

Metric Formula:

BMI = weight (kg) / [height (m)]²

Imperial Formula:

BMI = [weight (lbs) / height (inches)²] × 703

Example: Person weighing 154 lbs, height 5'7" (67 inches):
• BMI = (154 / 67²) × 703
• BMI = (154 / 4,489) × 703
• BMI = 24.1 (Normal weight)

BMI Categories:
• Below 18.5: Underweight
• 18.5-24.9: Normal weight
• 25.0-29.9: Overweight
• 30.0+: Obese

Note: BMI doesn't account for muscle mass, bone density, or body composition. Athletes and muscular individuals may have high BMI despite being healthy.