Massive data converter issues.

[Ninjakreborn]

    <script type="text/javascript">
	function data_calculator() {
		var data                     = $('#data').val();
		var data_one_conversion_type = $('#data_one_conversion_type').val();
		var data_two_conversion_type = $('#data_two_conversion_type').val();			
		var data_storage_type        = $('#data_storage_type').val();
		var value_modifier           = 0;			
		if (data_storage_type == 'Processor or Virtual Storage') {
			value_modifier = 1024;
		}else if (data_storage_type == 'Disk Storage') {
			value_modifier = 1000;
		}

		var calculation              = '';
		switch(data_one_conversion_type) {
			case 'bits':
				switch(data_two_conversion_type) {
					case 'bits':
						calculation = data;
						break;
					case 'bytes':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'byte')
						break;
					case 'kb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'kb');
						break;
					case 'mb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'mb');
						break;
					case 'gb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'gb');
						break;
					case 'tb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'tb');
						break;
					case 'pb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'pb');
						break;
					case 'eb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'eb');
						break;
					case 'zb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'zb');
						break;
					case 'yb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'yb');
						break;
					case 'bb':
						calculation = data / 8;
						calculation = bytesToSize(calculation, 'bb');
						break;
				}
				break;
		}
		$('#data_value').val(data + " " + data_one_conversion_type + ' = ' + calculation + " " + data_two_conversion_type);
	}		
	function bytesToSize(bytes, data_format) {  

			// Base values
			var kilobyte   = 1024;
			var megabyte   = kilobyte  * 1024;
			var gigabyte   = megabyte  * 1024;
			var terabyte   = gigabyte  * 1024;
			var petabyte   = terabyte  * 1024;
			var exabyte    = petabyte  * 1024;
			var zettabyte  = exabyte   * 1024;
			var yottabyte  = zettabyte * 1024;
			var brontobyte = yottabyte * 1024;

			if (data_format == 'byte') {
				return bytes;
			}else if (data_format == 'kb') {
				return bytes / kilobyte;				
			}else if (data_format == 'mb') {
				return bytes / megabyte;
			}else if (data_format == 'gb') {
					return bytes / gigabyte;
			}else if (data_format == 'tb') {
					return bytes / terabyte;
			}else if (data_format == 'pb') {
					return bytes / petabyte;
			}else if (data_format == 'eb') {
					return bytes / exabyte;
			}else if (data_format == 'zb') {
					return bytes / zettabyte;
			}else if (data_format == 'yb') {
					return bytes / yottabyte;
			}else if (data_format == 'bb') {
					return bytes / brontobyte;
			}
	}
	</script>
    <p>This form allows you to convert one data amount, to another.</p>
    <form name="data_converter" id="data_converter" class="standard" method="post" action="Javascript: void();" onsubmit="data_calculator();">
    	<label for="data_storage_type">Data Storage Type:</label>
      <select name="data_storage_type" id="data_storage_type">
      	<option value="Processor or Virtual Storage">Processor or Virtual Storage (1024)</option>
        <option value="Disk Storage">Disk Storage (1000)</option>
      </select><br />
    	<label for="data">Data Amount:</label>
      <input name="data" id="data" type="text" /><br />
    	<label for="data_one_conversion_type">Conversion Type:</label>
      <select name="data_one_conversion_type" id="data_one_conversion_type">
      	<option value="bits">Bits</option>
        <option value="bytes">Bytes</option>
        <option value="kb">Kilobytes</option>
        <option value="mb">Megabytes</option>
        <option value="gb">Gigabytes</option>
        <option value="tb">Terabytes</option>
        <option value="pb">Petabytes</option>
        <option value="eb">Exabytes</option>
        <option value="zb">Zettabytes</option>
        <option value="yb">Yottabytes</option>
        <option value="bb">Brontobytes</option>
      </select><br />
      <label for="data_two_conversion_type">Conversion Type:</label>
      <select name="data_two_conversion_type" id="data_two_conversion_type">
      	<option value="bits">Bits</option>
        <option value="bytes">Bytes</option>
        <option value="kb">Kilobytes</option>
        <option value="mb">Megabytes</option>
        <option value="gb">Gigabytes</option>
        <option value="tb">Terabytes</option>
        <option value="pb">Petabytes</option>
        <option value="eb">Exabytes</option>
        <option value="zb">Zettabytes</option>
        <option value="yb">Yottabytes</option>
        <option value="bb">Brontobytes</option>
      </select><br />
      <label for="data_value">Data Value</label>
      <input name="data_value" id="data_value" type="text" />
      
      <input name="submit" id="submit" type="submit" value="Convert" />
    </form>

 

Very simply. I want to build a converter. I want this converter to handle all data formats.  I can't seem to get my calculations the same as what I am finding online (or on Google).

I have tried to set this up in 10-15 different ways, but none of them are working. I have tried using Math.pow, and a variety of other attempts. I have tried handling the calculation in a variety of ways.

I have not built out the other conversions because I am having trouble even on the bits. Right now I am trying to get even semi correct results before I working on taking into account the two data format

types.

 

For example....

You can see the live results of the code listed above here: http://www.onlinewasteland.com/index.php/tools/extremeconverter

Any advice is appreciated.