Using JavaScript or C# to calculate feet and inches to metres and visa versa

Here are some code snippets for JavaScript and C# that show how to convert from say for example 26' 5" into metres 8.05m. The snippets also show converting metres to foot and inches.;

HTML:

<input id="feet" type="text" onkeyup="calculate 'feet')" /> '
<input id="inches" type="text" onkeyup="calculate('inches')" /> "
<input id="metres" type="text" onkeyup="calculate('metres')" />

JavaScript:

<script type="text/javascript">
function calculate(src) {
switch (src) {
case feetCtrl:
calculateFeetAndInchesToMetres();
break;
case inchesCtrl:
calculateFeetAndInchesToMetres();
break;
case metresCtrl:
calculateMetresToFeetAndInches();
break;
}
}

function calculateFeetAndInchesToMetres() {
var feet = $get("feet").value;
var inches = $get("inches").value;
var totalInches = feet * 12;
totalInches = totalInches + (inches * 1);
var cm = totalInches * 2.54;
var metres = cm / 100;
$get("metres").value = metres.toFixed(2);
}

function calculateMetresToFeetAndInches() {
var metres = $get("metres").value;
var metreInches = metres * 39.370078740157477;
$get("feet").value = Math.floor(metreInches / 12);
$get("inches").value = Math.floor(metreInches % 12);
}
</script>

Same functionality in C#

/// 

/// Gets the feet and inches representation of a metric value
/// 
/// The metres to use
/// The correct display string
public static string GetFeetAndInches(double metres)
{
Hashtable values = GetFeetAndInchesValues(metres);
double feet = (double)values["Feet"];
int inches = (int)values["Inches"];
StringBuilder result = new StringBuilder();
string feetText = feet.ToString();
string[] data = feetText.Split('.');
if (data.Length > 0)
{
feetText = data[0];
}
result.Append(feetText);
result.Append("'");
if (inches > 0)
{
result.Append(" ");
result.Append(inches);
result.Append("\"");
}

return result.ToString();
}

/// 

/// Gets the feet and inches of a metric value
/// 
/// The metres to use
/// An array of feet, inches
public static Hashtable GetFeetAndInchesValues(double metres)
{
Hashtable result = new Hashtable();
double metreInches = metres * MetreToInchesRatio;
double feet = metreInches / 12;
int inches = Convert.ToInt32(metreInches % 12);
result.Add("Feet", feet);
result.Add("Inches", inches);

return result;
}

/// 

/// Gets the metre equivalent of feet and inches combination
/// 
/// The foot value
/// The inches value
/// The metre value
public static double GetMetresFromFeetAndInches(double feet, int inches)
{
// Sourced from: http://sg.answers.yahoo.com/question/index?qid=20070403095853AA3FKJZ
double totalInches = feet * 12;
totalInches += inches;
double cm = totalInches * 2.54;
double metres = cm / 100;

return metres;
}