http://www.convert-me.com/en/
I love this site. You can covert almost any weight or measure, etc. to any other.
Interactive Units Converter
Welcome to our site! Here you will find interactive calculators for many measurement systems both commonly used like metric and U.S. Avoirdupois and quite exotic like Ancient Greek and Roman. U.S. to metric conversion is now easy and fast!
We plan to add new measurements and units regularly, so please come back often. It might be a good idea to add this site to your bookmarks, so you could easily return when needed.