I am currently using this "Word Value" and "Word from Value" Calculator at this page:

What it does is:
1. Converts words to numbers based on "A=1, B=2, C=3, etc..." and then adds up the sum of it.
Hence the word "CAT" = 3+1+20 = 24
3. Converts numbers to words by doing the reverse.
Hence the numbers 24 = CAT

Can anyone find out where else is offering such a tool?

Or else is there someone able to duplicate such a web tool?