Calculate your Body Mass Index (BMI) quickly and easily using our online BMI calculator. Input your weight and height to determine your BMI and understand your body’s weight category. Check if you’re underweight, at a healthy weight, overweight, or fall into obesity ranges.
Get insights into your health with our BMI calculator tool.

BMI Calculator

Use this calculator to check your body mass index (BMI).

Unit type Metric Imperial

Height

cm.

Please enter value between 125 and 225.

Weight

kg.

Please enter value between 10.0 and 500.0 ( one decimal ).

Height

ft.

in.

Please enter value between 4.2 and 7.3

Weight

lb.

st.

Please enter value between 22.0 and 1000.0 ( one decimal ).

Calculate BMI

Use this calculator to check your body mass index (BMI), which can be a helpful tool in determining your weight category. Or, use it to calculate your child’s BMI.

Your Body Mass Index (BMI) is

Based on your input, your BMI is in the category

You

Underweight

Healthy

Overweight

Obese

For your height, a healthy weight would be between kilograms

For your height, a healthy weight would be between lb.

What is BMI ?

Body Mass Index (BMI) is a widely used measurement that provides an estimation of an individual’s body fat based on their weight and height. It serves as a quick and simple tool to categorize individuals into different weight status categories, helping assess potential health risks associated with weight.

The BMI calculation is derived by dividing a person’s weight (in kilograms) by the square of their height (in meters). The formula is BMI = weight (kg) / (height (m))^2. The resulting number places individuals into different BMI categories:

• Underweight: BMI less than 18.5
• Normal or Healthy Weight: BMI between 18.5 and 24.9
• Overweight: BMI between 25 and 29.9
• Obesity: BMI of 30 or higher

Limitations of BMI

While BMI is a valuable screening tool, it’s important to note its limitations. For instance, it doesn’t directly measure body fat percentage or differentiate between fat and muscle mass. Athletes or individuals with a higher muscle mass may have a higher BMI, classifying them as overweight or obese despite being in good physical shape.

Moreover, BMI doesn’t account for various factors influencing an individual’s health, such as genetics, age, gender, or distribution of fat in the body. Some individuals with a “healthy” BMI might still carry excess visceral fat (fat around organs), which poses health risks.

Despite its limitations, BMI remains valuable in public health. It is helping healthcare professionals identify potential weight-related health risks in populations and guiding discussions about healthy lifestyle choices. It serves as a starting point for assessing an individual’s overall health. But it should be complemented by other health assessments and consultations with healthcare providers for a comprehensive understanding of one’s health status.

Maintaining a healthy BMI through a balanced diet, regular physical activity, adequate sleep, and stress management can significantly contribute to overall well-being. Understanding BMI serves as a foundational step toward fostering healthier lifestyle choices and promoting better health outcomes for individuals.