It was really a hot day (38 degrees) here and I just didn't feel like doing all too much. Then I was talking some some friend in the US and she told me the temparture there but I didn't have a clue what that converts to Celsius... [you know, all those Americans with their weird way of measuring things like miles per hour and Fahrenheit].... it's not been the first this happened to me and I just looked then up how to convert those temperatures.
Then I thought I could write a little PHP script for such a calculator... et voilą:
http://www.wsjb78.com/tempconvertor.php
It's not a beauty for the eyes but it's easy to use (I assume everyone here knows how to enter digits into a form field and press submit)
Note: URL fixed... as I said, it's too hot here!