See the below image for the Crochet hook size conversion diagram. A 2.75 mm crochet hook is considered a C/2 in US hook sizes and is best for superfine weight yarn. What is a Size P Crochet Hook Conversion? A size P crochet hook in US is most commonly a 15 mm hook in metric terms. But some brands may label P crochet hooks as 10 mm so keep that in mind when crochet hook shopping.
Crochet hooks are commonly available in diameters ranging from 0.35 mm to 25 mm in millimeters. Steel, lace, and thread hooks are defined as hooks with a diameter less than 2.00mm. Yarn hooks, also known as standard hooks, have a diameter of 2.00 mm or more, whereas aluminum hooks have a diameter of 2.0mm to 6.0mm.
What Size is a G Crochet Hook? A G/6 is a 4.00 mm size crochet hook most commonly but can be a 4.25 mm such as with the brand Boye. A G crochet hook is considered an 8 in UK & standard Canadian hook size charts. What Letter is a 2.75 mm Crochet Hook?