Tryit Editor v1.4

<html>
<head>
<script type="text/javascript">
function convert(degree)
{
if (degree=="C")
 {
 F=document.getElementById("c").value * 9 / 5 + 32;
 document.getElementById("f").value=Math.round(F);
 }
else	
 {
 C=(document.getElementById("f").value -32) * 5 / 9;
 document.getElementById("c").value=Math.round(C);
 }
}
</script>
</head>

<body>
<p></p><b>Insert a number into one of the input fields below:</b></p>
<form>
<input id="c" name="c" onkeyup="convert('C')"> degrees Celsius<br />
equals<br /> 
<input id="f" name="f" onkeyup="convert('F')"> degrees Fahrenheit 
</form>
<p>Note that the <b>Math.round()</b> method is used, so that the result will be returned as an integer.</p>
</body>

</html>

Your Result:

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