BMI Calculator

Use this BMI Calculator to calculate your Body Mass Index based on height and weight. BMI is commonly used to assess whether a person falls within an underweight, healthy weight, overweight, or obesity range.

BMI Calculator

Calculate your Body Mass Index using CDC guidelines. Get instant weight category, healthy range, and personalized health insights.

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ft
in
lbs
years

BMI Results

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Body Mass Index
Enter details to calculate
Weighing Machine Scale
Underweight< 18.5
Normal18.5-24.9
Overweight25-29.9
Obese30+
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Current BMI Value

About BMI

What is BMI?

BMI (Body Mass Index) is calculated as weight divided by height squared. For US units: BMI = (weight in lbs × 703) ÷ (height in inches)². It's a screening tool used by the CDC to assess weight categories.

CDC Categories

  • Underweight: BMI < 18.5
  • Normal: BMI 18.5 – 24.9
  • Overweight: BMI 25 – 29.9
  • Obese: BMI ≥ 30

Disclaimer: This BMI calculator provides estimates for informational purposes only. Consult a healthcare professional for medical advice.

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