BMI Calculator (US Units)
Calculate your Body Mass Index (BMI) using US units of measurement. Enter your weight in pounds and height in feet and inches to get your BMI instantly. This free BMI calculator for USA users provides accurate results and health category classifications to help you understand your body composition.
Calculate Your BMI
How to Use This BMI Calculator
- Enter your weight in pounds (lbs)
- Enter your height in feet and inches
- Click "Calculate BMI" to see your result
- Review your BMI score and health category
BMI Categories
Related Health Tools
What Is BMI (Body Mass Index)?
Body Mass Index (BMI) is a simple health indicator that compares your weight to your height. It is used across the USA and worldwide as a quick way to estimate whether a person is underweight, at a healthy weight, overweight, or obese.
This US BMI calculator uses pounds, feet, and inches, so you can enter values exactly how they appear in most American medical forms, gym memberships, and health apps.
BMI Formula Using US Units
When using US units (pounds and inches), the BMI formula is:
BMI = (Weight in pounds ÷ (Height in inches)²) × 703
- Weight in pounds (lbs): Your current body weight.
- Height in inches: Your height converted from feet and inches into total inches.
- 703: A conversion factor used for US measurement units.
Example BMI Values for US Adults
Here are some example BMI calculations for common height and weight combinations in the USA:
| Height | Weight | BMI | Category |
|---|---|---|---|
| 5'4" | 120 lbs | 20.6 | Normal |
| 5'6" | 160 lbs | 25.8 | Overweight |
| 5'10" | 180 lbs | 25.8 | Overweight |
| 6'0" | 200 lbs | 27.1 | Overweight |
Use the BMI calculator above to get a personalized value based on your own height and weight.
Limitations of BMI
While BMI is a widely used health screening tool in the USA, it does not directly measure body fat. It may not be fully accurate for:
- Very muscular individuals (athletes)
- Pregnant women
- Older adults with low muscle mass
- Children and teenagers (who often use age-specific BMI charts)
Always discuss your BMI results with a healthcare professional for a complete picture of your health.
Frequently Asked Questions
Is this BMI calculator designed for USA users?
Yes. This calculator uses US units: pounds for weight and feet/inches for height, which are commonly used in the United States.
Does a normal BMI mean I am completely healthy?
Not necessarily. BMI is just one indicator. It does not measure body fat percentage, muscle mass, or overall fitness. Use it as a starting point and consult a doctor for proper evaluation.
Is my BMI data saved on this website?
No. All BMI calculations are done in your browser. Your inputs are not stored, tracked, or sent to a server.
Can I use this BMI calculator for kids?
This tool is mainly intended for adults. Children and teenagers should use age- and sex-specific BMI charts, usually provided by pediatricians or official health websites.