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BMI Calculator
Calculate your Body Mass Index.
BMI Categories
This chart shows the standard BMI categories for adults.
Underweight
< 18.5
Low Risk
Normal Weight
18.5 - 24.9
Ideal Risk
Overweight
25.0 - 29.9
High Risk
Obese
30.0 - 39.9
Very High Risk
Morbidly Obese
≥ 40.0
Extremely High Risk

Note: BMI is a general guide and may not be accurate for all body types, such as athletes or pregnant women. Consult a healthcare professional for personalized advice.

Understanding Your BMI Results

What is BMI? Body Mass Index (BMI) is a simple numerical measure of your body fat based on your height and weight. It is widely used as a screening tool to identify whether a person is underweight, normal weight, overweight, or obese.

While BMI doesn't directly measure body fat, it correlates moderately with more direct measures of body fat. Furthermore, BMI is a low-cost and easy-to-perform method of screening for weight categories that may lead to health problems.

Why it matters: Knowing your BMI can be a helpful starting point for conversations with your healthcare provider about your weight and overall health. Maintaining a healthy BMI can significantly reduce the risk of various chronic conditions, including:

  • Type 2 Diabetes
  • High Blood Pressure (Hypertension)
  • Cardiovascular Disease
  • Certain types of Cancers

Frequently Asked Questions

Is BMI accurate for everyone?

BMI is a general screening tool and may not be accurate for athletes with high muscle mass, pregnant women, or the elderly, as it doesn't distinguish between muscle and fat.

What is a 'healthy' BMI range?

For most adults, a healthy BMI is considered to be between 18.5 and 24.9. Ranges below 18.5 are underweight, and above 25 are overweight.

How often should I check my BMI?

It's a good idea to check your BMI periodically as part of your overall health monitoring, especially if you're making changes to your diet or exercise routine.

Is this calculator secure?

Yes, your data is processed entirely in your browser and is never stored or sent to any server, ensuring complete privacy.