BMI Calculator - Find Your Body Mass Index | Health & Fitness

BMI Calculator

Let's calculate your Body Mass Index (BMI) and see how your weight aligns with your health goals. This is a free BMI calculator that provides you with insights into your body mass index.

Age	ages: 2 - 120
Gender	Male Female

Height	cm
Weight	kg

Your Result

BMI = -- kg/m² (--)

Healthy BMI range: 18.5 kg/m² - 25 kg/m²
Healthy weight range: -- kg - -- kg
BMI Prime: --
Ponderal Index: -- kg/m³

Understanding Your BMI

The Body Mass Index (BMI) is a simple way to assess your weight relative to your height. It's a tool that helps determine whether you're in a healthy weight range, underweight, overweight, or if you have obesity. This free bmi calculator is for everyone – whether you are using a bmi calculator for women, bmi calculator for men, or a child bmi calculator, the basic principles of how it works remain the same. While it's not a perfect measure, my bmi calculator is a good starting point to understand your body weight and can help you on your weight management journey. This bmi calculator online tool provides an initial assessment of your body mass index. We also offer a bmi calculator kg to give you the most accurate results.

BMI Categories

Here's a breakdown of what different BMI ranges mean. Knowing your category is the first step towards better health. Remember, this health calculator is a tool that offers insights, not a diagnosis. Whether you're using this bmi calculator adults or a bmi calculator teen version, understanding the categories can be helpful. The cdc bmi calculator guidelines will also indicate how to interpret your result.

Category	BMI Range (kg/m²)
Severe Thinness	< 16
Moderate Thinness	16 - 17
Mild Thinness	17 - 18.5
Normal	18.5 - 25
Overweight	25 - 30
Obese Class I	30 - 35
Obese Class II	35 - 40
Obese Class III	> 40

Delving Deeper: What is BMI Prime?

BMI prime is the ratio of your measured BMI to the upper limit of what is considered normal. It's a helpful value to see where you stand on the BMI spectrum. The formula is pretty straightforward: You can compare your result to others by using the bmi calculator age feature.

BMI prime = (Your BMI) / 25

A person with a BMI prime less than 0.74 is generally classified as underweight; from 0.74 to 1 is normal; over 1 is overweight; and over 1.2 is considered as having obesity. It is also great for monitoring your progress if you are an athletic individual.

Ponderal Index: An Alternative Perspective

The Ponderal Index (PI) is similar to the body mass index in that it assesses leanness or corpulence based on your height and weight. The PI uses a cubed height value in its calculations. While the BMI is useful for large populations, the PI can be more accurate for individuals, especially for very tall or short people, and it can also be useful in settings like the bmi calculator army to provide additional metrics.

The equation for PI is:

PI = weight (kg) / height³ (m)

BMI Formula

Want to know how BMI is calculated? Here are the equations used in both metric and US customary units. Don't worry, our bmi calculator accurate tool does all the math for you! You can use this bmi calculator app or the online version and will receive very similar results.

USC Units:

BMI = 703 * (mass (lbs) / height² (in))

SI, Metric Units:

BMI = mass (kg) / height² (m)

Important Considerations

Remember that the BMI is just one factor in your overall health. It doesn't measure body fat directly, so it might not be fully accurate for everyone. For example, an individual with a lot of muscle could have a higher bmi as it measures weight, not body fat. If you have any questions regarding your bmi consult with a healthcare professional for personalized guidance. You can also consult with resources from the AARP bmi calculator. Focusing on overall well-being, eating a balanced diet, and regular exercise are essential for a healthy lifestyle.