BMI Calculator
Calculate your Body Mass Index (BMI) instantly using imperial or metric units. Visualize your weight category on a healthy screening scale.
Body Mass Index (BMI) Calculator
Quickly estimate your body fat based on your weight and height. The BMI is a useful screening tool to identify possible weight problems for adults, supporting both Imperial and Metric units.
Measurements
Enter your measurements and click calculate to see your results.
Please note that BMI is a general screening tool and not indicative of body fatness or overall health for every individual. It does not distinguish between weight from fat and weight from muscle, meaning muscular athletes may fall into the "overweight" category despite being perfectly healthy. Consult a healthcare provider for a thorough assessment.
What is the Body Mass Index?
Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. It is an inexpensive, easy-to-perform method of screening for weight categories that may lead to health problems.
BMI Categories Explained
| BMI Range | Category |
|---|---|
| Less than 18.5 | Underweight |
| 18.5 to 24.9 | Healthy Weight |
| 25.0 to 29.9 | Overweight |
| 30.0 or Higher | Obesity |
Limitations of BMI
While BMI is widely used as a risk indicator, it is not a direct measure of body fat. It has several clinical limitations:
- Muscular Athletes: Because muscle is denser than fat, athletes may have a high BMI and be incorrectly categorized as overweight or obese.
- Older Adults: It may underestimate body fat in older persons who have lost muscle mass safely.
- Pregnant Women: BMI is not meant to be used for women who are pregnant or nursing.
The tools and calculators provided on The Simple Toolbox are intended for educational and informational purposes only. They do not constitute financial, legal, tax, or professional advice. While we strive to keep calculations accurate, numbers are based on user inputs and standard assumptions that may not apply to your specific situation. Always consult with a certified professional (such as a CPA, financial advisor, or attorney) before making significant financial or business decisions.
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