Crochet hook sizing

[Swan]

Hi,
Please can anyone tell me the size of H crochet hook. I have decided to pick up my crocheting again., but all my hooks are in mm.

[Empress Busy Bee]

Maybe this will help you:

http://www.crochettreasures.com/conversion.htm

Or this one:

http://www.numei.com/needlesizes.htm

:)

[Swan]

Brilliant, many thanks.