Metric Converter

import java.util.Scanner;

public class metricConverter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Double distance = Double.parseDouble(scanner.nextLine());
        String inputMetric = scanner.nextLine();
        String outputMetric = scanner.nextLine();

        if (inputMetric.equals("m")) {
            distance = distance / 1;
            }
            else if (inputMetric.equals("mm"))  {
            distance = distance / 1000;
            }
            else if (inputMetric.equals("cm"))  {
            distance = distance / 100;
            }
            else if (inputMetric.equals("mi")) {
            distance = distance / 0.000621371192;
            }
            else if (inputMetric.equals("in")) {
            distance = distance / 39.3700787;
            }
            else if (inputMetric.equals("km"))  {
            distance = distance / 0.001;
            }
            else if (inputMetric.equals("ft")) {
            distance = distance / 3.2808399;
            }
            else if (inputMetric.equals("yd")) {
            distance = distance / 1.0936133;
            }

        if (outputMetric.equals("m")) {
            distance = distance * 1;
        }
        else if (outputMetric.equals("mm")) {
            distance = distance * 1000;
        }
        else if (outputMetric.equals("cm")) {
            distance = distance * 100;
        }
        else if (outputMetric.equals("mi")) {
            distance = distance * 0.000621371192;
        }
        else if (outputMetric.equals("in")) {
            distance = distance * 39.3700787;
        }
        else if (outputMetric.equals("km")) {
            distance = distance * 0.001;
        }
        else if (outputMetric.equals("ft")) {
            distance = distance * 3.2808399;
        }
        else if (outputMetric.equals("yd")) {
            distance = distance * 1.0936133;
        }


        System.out.printf("%f %s", distance, outputMetric);
    }
}