Online BMI Calculator
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What Is BMI?
Body Mass Index (BMI) is used as a screening tool to estimate a person’s likelihood of developing health problems. BMI is calculated by dividing a person’s weight (in kilograms) by their height (in meters) squared. To calculate your BMI enter your height and weight in either our U.S. or Metric calculators below.
Also, take a look at some of our other Health Calculators including Body Fat Percentage and Daily Calorie Requirements.
(While BMI is a useful metric into your overall fitness, it’s only one metric. To track BMI along with other health metrics, we recommend getting a Smart Scale for home).
How to Understand BMI
BMI is used to place individuals into one of four categories: Underweight, Normal, Overweight, or Obese. Individuals in the Overweight and Obese categories are at greater risk for developing a range of health problems.
There is no difference in BMI Categories between men and women. These categories are used regardless of gender or age.
| Category | BMI Measurement |
|---|---|
| Underweight | <18.5 |
| Normal | 18.6 - 25 |
| Overweight | 25.1 - 30 |
| Obese | >30 |
Take Control of Your Health with a Smart Scale
Unlike a traditional analog scale that only measures weight, Smart Scales can track a host of metrics: body composition (e.g., percentage of bone, fat, muscle, etc), heart rate, and more. Many connect to a smart phone app allowing for easy tracking of health progress. They also may be eligible for reimbursement from your FSA/HSA account.
To learn more about Smart Scales and see our favorites for 2024, click the button.
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Additional Resources for Healthy Living
Unfortunately, there are a lot of web sites out there giving unreliable fitness advice. But there are also some great ones which we rely on when writing our articles. A few great resources for information you may want to also view include the National Institutes of Heath, the Mayo Clinic, and the World Health Organization.