What to know
Body mass index (BMI) is a calculated measure of weight relative to height. For adultsBMI is categorized into underweighthealthy weightoverweightand obesity. Obesity is further subdivided into three classes. This BMI calculator is for adults 20 and older.
Adult BMI Calculator
This calculator provides BMI and the corresponding BMI category for adults 20 and older. For children and teens 2 through 19 yearsuse the BMI Calculator for Children and Teens.
BMI is one potential health indicator and should be considered with other factors when assessing an individual's health. These factors may include a patient's medical historyhealth behaviorsphysical exam findingsand laboratory findings. Read more About BMI. Persons may consider seeking advice from their health care providers about their BMI. This calculator is not a substitute for professional medical advice.
Adult BMI Calculator
Calculated Results
0
BMI
category
BMI Category
Information Entered
Height:
Weight:
Detailed Results
Based on the information enteredyour body mass index (BMI) is 0indicating your weight is in the category for adults of your height. Obesity is sub-divided into 3 classesand your BMI falls into Class 0also called Severe Obesity.
| BMI Category | BMI Range |
|---|---|
|
|
Below 18.5 |
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18.5 to 24.9 |
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25.0 to 29.9 |
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30.0 or greater |
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30.0 to 34.9 |
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35.0 to 39.9 |
|
Class 3 Obesity (Severe Obesity) |
40.0 or greater |
Maintaining a BMI in the Healthy Weight range is one way to support overall health as you age. Discuss your BMI with your healthcare provider as BMI may relate to your overall health and well-being. For more information about life approachesvisit Healthy Weight and Growth. BMI is a screening measure and is not intended to diagnose disease or illness.
Discuss your BMI category with your healthcare provider as BMI may relate to your overall health and well-being. Your healthcare provider might determine possible reasons for underweightoverweightexcess weight and recommend support or treatment. BMI is a screening measure and is not intended to diagnose disease or illness.
Remember
For more informationvisit About BMI or BMI Frequently Asked Questions.
Related Resources
- Tips for Maintaining Healthy Weight
- Tips for Healthy Eating
- Staying Active at Any Size
- Obesity: Risk FactorsDataand More
- Choosing a Safe & Successful Weight-loss Program
- Risk Factors for Obesity
- Weight Management
- CDC’s National Diabetes Prevention Program
- MOVE! Weight Management Program for Veterans
- Prescription Medications to Treat Overweight and Obesity
- Weight-loss (Metabolic & Bariatric) Surgery
Error
The calculated BMI appears to be out of range. Please check the accuracy of the information you entered.
Information Entered
Height:
Weight:
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BMI is one potential health indicator and should be considered with other factors when assessing an individual's health. Persons may consider seeking advice from their health care providers about their BMI. This calculator is not a substitute for professional medical advice.
Note: this calculator uses JavaScript. If you have JavaScript turned off or have problems using the calculatoruse the formula for calculating BMI on About BMI.