public class ConversionTool {

    public static void main(String[] args){

    }

    public static float CentimetersToInches(float centimeter){
        if(centimeter > 0)
        {
            float inches = (float)0.3937 * centimeter;
            return inches;
        }
        else
            return 0;

    }

    public static float InchesToCentimeters(float inches){
        if(inches > 0)
        {
            float centimeter = (float)2.54 * inches;
            return centimeter;
        }
        else
            return 0;

    }

    public static float FeetToMeters(float feet){
        if(feet > 0)
        {
            float meter = (float)0.3048 * feet;
            return meter;
        }
        else
            return 0;
    }

    public static float MetersToFeet(float meter){
        if(meter > 0)
        {
            float feet = (float)3.28084 * meter;
            return feet;
        }
        else
            return 0;
    }

    public static float CelsiusToFahrenheit(float celsius){
        if(celsius > 0)
        {
            float fahrenheit =(float) (celsius* 1.8 + 32);
            return fahrenheit;
        }
        else
            return 0;

    }

    public static float FahrenheitToCelsius(float fahrenheit){
        if(fahrenheit > 0)
        {
            float celsius = (float)((fahrenheit -32 )* 0.5556);
            return celsius;
        }
        else
        {
            return 0;
        }
    }

    public static float MphToKph(float mph){
        if(mph > 0)
        {
            float kph = (float)1.60934 * mph;
            return kph;
        }
        else
            return 0;
    }

    public static float KphToMph(float kph){
        if(kph > 0)
        {
            float mph = (float)0.621371 * kph;
            return mph;
        }
        else
            return 0;
    }

}