BMI Calculator

BMI Calculator


Unit of measurement *



What is BMI?

BMI is a measure of your body fat based on your weight and height. It is calculated by dividing your weight in kilograms by your height in meters squared. The result is a number that falls into one of the following categories:

  • Underweight: BMI less than 18.5
  • Normal weight: BMI between 18.5 and 24.9
  • Overweight: BMI between 25 and 29.9
  • Obese: BMI 30 or higher

While BMI doesn’t directly measure body fat, it’s a good indicator of overall health. Higher BMI values are associated with an increased risk of developing health problems, including type 2 diabetes, heart disease, and stroke.

BMI Chart


What Do Your Results Mean?

Your BMI result will fall into one of the categories listed above: underweight, normal weight, overweight, or obese. Your BMI can help you determine if you’re at a healthy weight for your height and age. However, BMI is not a perfect indicator of health and should be used in conjunction with other measures, such as waist circumference and blood pressure. You can also get more information on the CDC website.

If your BMI is in the overweight or obese category, you may be at increased risk for health problems. In this case, it’s important to talk to your doctor about making healthy lifestyle changes to lower your risk.

Tips for Achieving a Healthy Weight

Maintaining a healthy weight is important for overall health and can lower your risk for chronic conditions such as heart disease, diabetes, and cancer. Here are some tips for achieving and maintaining a healthy weight:

  • Eat a balanced diet that includes plenty of fruits, vegetables, whole grains, and lean protein sources. Check out our keto nutrition page! Subscribe and get a free E-book full of Keto recipes.
  • Limit your intake of saturated and trans fats, added sugars, and sodium.
  • Stay active by engaging in regular physical activity such as walking, running, or swimming. Check out our Couch to 5 km training plan!
  • Get enough sleep each night, as sleep is important for maintaining a healthy weight.
  • Manage stress through activities such as meditation, yoga, or deep breathing exercises.


Q: Can BMI be used for athletes or bodybuilders?

A: While BMI is a useful tool for most people, it may not be accurate for athletes or bodybuilders who have a high muscle mass.

Q: Is BMI the only measure of health?

A: No, BMI is just one measure of health and should be used in conjunction with other measures such as waist circumference, blood pressure, and blood sugar levels to get a complete picture of your health.

Q: Can BMI be inaccurate for older adults?

A: BMI may be less accurate for older adults because it doesn’t take into account changes in muscle mass and bone density that can occur with aging. In this case, other measures may be more appropriate.

Q: Can BMI be influenced by ethnicity or gender?

A: Yes, BMI may be influenced by ethnicity and gender. For example, some ethnic groups may have higher body fat percentages at lower BMI values, while men generally have more muscle mass than women at the same BMI.