BMI Calculator
Estimate body mass index and a healthy-weight range.
BMI
25.8
Category
Overweight
Healthy weight low
128.9 lb
Healthy weight high
173.6 lb
Formula
BMI = weight(lb) x 703 / height(in)^2.
Assumptions
- BMI is a broad screening estimate and does not measure body composition.
- Use health calculators for general information only, not medical diagnosis.
The BMI calculator estimates body mass index from weight and height. It is a screening estimate, not a medical diagnosis.
How to Use
The BMI calculator estimates body mass index from weight and height. It is a screening estimate, not a medical diagnosis.
- Open the calculator : Start with BMI Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What does the BMI Calculator estimate?
It estimates body mass index from height and weight.
How accurate is the result?
BMI is only a screening estimate and does not measure body composition or replace medical advice.
What is considered a healthy BMI range?
According to standard medical guidelines, a healthy Body Mass Index (BMI) falls between 18.5 and 24.9. A BMI below 18.5 is considered underweight, 25.0 to 29.9 is overweight, and 30.0 or higher falls into the obesity category.
What are the limitations of the BMI calculation?
The standard BMI formula only relies on height and weight, meaning it cannot distinguish between muscle mass and body fat. Consequently, highly muscular athletes may mathematically categorize as overweight or obese despite having incredibly low body fat percentages.