BMI Calculator
Calculate your Body Mass Index instantly. Enter your height and weight in imperial or metric units to see your BMI, category, and healthy weight range.
How to Use
- Choose your preferred height unit (feet/inches or centimeters) and enter your height.
- Choose your preferred weight unit (pounds or kilograms) and enter your weight.
- Your BMI, category, and healthy weight range appear instantly.
- Use the color-coded scale to see where your BMI falls on the spectrum.
Frequently Asked Questions
What is BMI?
Body Mass Index (BMI) is a measure of body fat based on height and weight. It's calculated by dividing weight in kilograms by height in meters squared (kg/m²). BMI is used as a screening tool to identify potential weight-related health issues.
What are the BMI categories?
The standard BMI categories are: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (30 and above). These ranges apply to adults aged 20 and older.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat mass, so athletes may have a high BMI despite being healthy. It also doesn't account for age, sex, ethnicity, or body composition. Consult a healthcare provider for a complete health assessment.
What is a healthy BMI?
A BMI between 18.5 and 24.9 is generally considered healthy for adults. However, optimal BMI can vary based on individual factors. The healthy weight range shown by our calculator gives you the weight range corresponding to a BMI of 18.5–24.9 for your height.