Our BMI comparison calculator uses the weight and height of two people or the same person, just different weights, to help compare body mass index (BMI) results.
This calculator is for adults, both men and women.
BMI is a ratio derived from a person's height and weight.
How to Use the Body Mass Index Calculator
- Choose Standard or Metric
- Enter name. weight and height measurements
- Now enter comparisons name, weight and height measurements
Standard: Enter your weight in pounds (lb) and height in feet (ft) and inches (in).
Metric: Enter your weight in kilograms (kg) and height in centimeters (cm). - Click Calculate
BMI Formula
BMI = Mass-kg Divided by heightm2
BMI = kilograms divided by (metres x metres)
BMI = kilograms divided by (metres x metres)
BMI = Mass-lb Divided by heightin2 x 703
BMI = pounds divided by (inches x inches) x 703
BMI = pounds divided by (inches x inches) x 703
BMI Limitations
- BMI does not account for muscle mass
- BMI does not function for correctly for all ages
- BMI can vary due to race/ethnicity
- BMI is not directly related
to health