Master List of Crochet Hook Sizes

Master List of Crochet Hook Sizes

Crochet hook sizes matter. New crocheters may not even clue in there is a difference until they are staring at a yarn aisle and seeing all the different sizes.

Hook sizes I recommend when making a purchase for the first time. Look for 5 mm, 5.5 mm, 6 mm or 6.5 mm. For our USA friends, that size H, I, J and K.

If you are ever unsure, look at the ball band and it gives a recommendation for the hook size needed.

Sizes indicated in the following order. Metric, USA, UK

• 2 mm,  n/a, 14
• 2.25 mm, B/1, 13
• 2.50 mm, n/a, 12
• 2.75 mm, C, 11
• 3.00 mm, n/a, 11
• 3.25 mm, D, 10
• 3.50 mm, E/4, 9
• 3.75 mm, F, n/a
• 4.00 mm, 6, 8
• 4.25 mm, G, n/a
• 4.50 mm, 7, 7
• 5.00 mm, H/8, 6
• 5.50 mm, I/9, 5
• 6.00 mm, J/10, 4
• 6.50 mm, K/10.5, 3
• 7.00 mm, n/a, 2
• 8.00 mm, L, 0
• 9.00 mm, M/N/15, 00
• 10.00 mm, P, 000
• 16.00 mm, Q, n/a
• 19.00 mm, S, n/a
• 25.00 mm, U, n/a
• 30.00 mm, Z, n/a

For beginners, I would recommend the hook sizes in red for learning.