BMI Calculator
Instantly calculate your Body Mass Index (BMI) using your height and weight. BMI is a simple way to estimate
if
you’re underweight, normal, overweight, or obese.
Not sure how it works? See FAQ ↓
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Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a simple calculation using height and weight to estimate body fat and health risk.
How is BMI calculated?
BMI = weight (kg) / [height (m)]². For imperial: BMI = 703 × weight (lb) / [height (in)]².
What are the BMI categories?
- Underweight: BMI < 18.5
- Normal weight: 18.5 – 24.9
- Overweight: 25 – 29.9
- Obese: 30 or higher
Is BMI accurate?
BMI is a useful screening tool, but it doesn’t account for muscle mass, bone density, or overall health. For a full picture, consult a health professional.