BMI Calculator
Our BMI Calculator helps you understand your body weight in relation to your height, offering a quick insight into whether you're underweight, at a healthy weight, overweight, or obese. It's a simple yet powerful way to set goals for your weight loss programs and track progress toward better health.
BMI Calculator
Enter your height and weight below to check your BMI
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in
lbs
Your BMI
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About the BMI Calculator
What is BMI?
Body Mass Index (BMI) is a screening measure that uses your height and weight to estimate whether your weight falls into a category associated with higher or lower health risk. It doesn't measure body fat directly, but it's a fast, free starting point for tracking weight-related health trends.
Because BMI doesn't account for muscle mass, bone density, or fat distribution, it works best as one data point among several. Pairing it with a measurement like waist-to-height ratio, or a conversation with your care team, gives you a fuller picture of your health.
How is BMI calculated?
BMI is calculated by dividing your weight by the square of your height. Because our calculator uses pounds and inches, the result is multiplied by a conversion constant of 703 so it matches the standard kg/m² scale.
Formula
703 × weight (lb) ÷ [height (in)]²
Example: 703 × 160 lb ÷ (67 in)² ≈ 25.1
| Category | Range |
|---|---|
| Underweight | Below 18.5 |
| Healthy weight | 18.5 – 24.9 |
| Overweight | 25 – 29.9 |
| Obesity | 30 and above |
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