Online BMI Calculator Tool

Body Mass Index (BMI) Calculator – Quick Health Insight

Use our BMI Calculator to quickly estimate whether your weight is within a healthy range for your height. It's a simple, science-backed tool that helps you better understand your body composition and assess potential health risks related to underweight, overweight, or obesity.

Note: BMI is a general indicator and does not reflect muscle mass or body composition. Always consult with a healthcare provider for a complete health assessment.

What is BMI?

BMI stands for Body Mass Index, a simple tool used worldwide to estimate whether your weight is in a healthy range for your height. It’s calculated by dividing your weight by the square of your height and gives a number that falls into different categories—from underweight to obesity.

While BMI doesn’t measure body fat directly, it’s widely used by doctors and health professionals as a quick screening tool. It helps identify whether you may be at risk of health issues linked to being underweight, overweight, or having obesity.

It’s important to remember that BMI is only one piece of the puzzle. It doesn’t distinguish between fat and muscle mass and may not perfectly reflect your health status if you’re very athletic, older, or have specific medical conditions. Still, it’s a useful starting point for understanding your general weight category and discussing your health goals with a professional.

Frequently asked questions

What is BMI and why is it important?

BMI, or Body Mass Index, is a numerical value of your weight in relation to your height. It’s used as a general indicator of whether you have a healthy body weight for your height.

How do I calculate my BMI?

You can calculate your BMI by dividing your weight in kilograms by your height in meters squared, or by using our free BMI calculator that supports both metric and imperial units.

What BMI range is considered healthy?

According to the World Health Organization, a BMI between 18.5 and 24.9 is considered a healthy range for most adults.

Is BMI always accurate?

BMI is a useful screening tool but does not directly measure body fat. Factors such as muscle mass, bone density, and overall body composition can influence your BMI reading.

Can children use the BMI calculator?

BMI can be calculated for children, but the results should be interpreted differently using age- and gender-specific growth charts. Please, check our Child and Teen BMI Calculator