Post details: Java Body fat calculator
Monday February 13, 2006
Java Body fat calculator
Well based on the first body density equation from this site.
http://topendsports.com/testing/tests/skinfolds.htm
I have written a Body Fat Percent Calculator in Java that uses skin fold measurements. I could easily make it into a Javascript and post a working version on the site, but I think for now, I'll just post the source code so you can compile it on your own. I have no problem doing that. It seems to be much more accurate than the tape measurement I had previously been using. Let me know if you see any problems with the program.
import java.util.Scanner;
import java.io.IOException;
public abstract class bfcalc {
public static double calc(double chest, double abdominal, double thigh, int age) {
double sum = chest + abdominal + thigh;
double density = (1.10938d - (0.0008267d * sum) + (0.0000016d * (sum * sum)) - (0.0002574d * age));
return (495/density) - 450;
}
public static void main(String[] args) throws IOException{
System.out.print("Enter your age: ");
Scanner in = new Scanner(System.in);
int age = in.nextInt();
in.nextLine();
System.out.print("Enter chest measurement: ");
double chest = in.nextDouble();
in.nextLine();
System.out.print("Enter abdominal measurement: ");
double abdominal = in.nextDouble();
in.nextLine();
System.out.print("Enter thigh measurement: ");
double thigh = in.nextDouble();
in.nextLine();
System.out.println("Your body fat percentage is " + bfcalc.calc(chest, abdominal, thigh, age));
}
}
Oh and by the way. Based on several runs of my program, my body fat percent is 15.33 ± 0.57. 
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