Thread: BMI Calculator, problem with output

Write a Java program to compute body mass index (BMI).



Test Data
Input weight in pounds: 452
Input height in inches: 72


Expected Output:
Body Mass Index is 61.30159143458721

import java.util.Scanner; 
 
class RicMain 
{ 
    public static void main(String args[]) 
    { 
        //formula for body mass index: BMI = (730) * (Weight(w)(in pounds)/height * height(h)(in inches)) 
        Scanner hw = new Scanner(System.in); 
 
        System.out.print("Enter your height in pounds: "); 
        double h = hw.nextDouble(); 
 
        System.out.print("Enter your weight in inches: "); 
        double w = hw.nextDouble(); 
 
        double bmi = ((730 * w) / (h * h)); 
        System.out.println("Your body mass index (BMI) is: " + bmi);  
    } 
}

There is a problem. When I enter the following after executing the code:
Enter your height in pounds: 452
Enter your weight in inches: 72
Your body mass index (BMI) is: 0.257263685488292 <------This is wrong. What an I doing wrong?

You have entered your weight and height incorrectly (weight is pounds not inches..) plus your maths is wrong is should be:
BMI = 703 * w / (h * h)