Crochet Hook Sizes

This post may contain affiliate links. If you make a purchase through one of these links, I do receive commission. For information, read my full privacy policy. Before reading our posts, please review our disclaimer.

This crochet hook sizes conversion chart compares metric (mm) measures to US terms.

Please note that this chart does not include steel hooks. They are sized differently. Steel hooks sizing are reversed compared to regular crochet hooks. With steel hooks, the higher the number, the smaller the hook.

Crochet Hook Sizes

Metric (mm)	US Term
2.25 mm	B-1
2.5 mm
2.75 mm	C-2
3.125 mm	D
3.25 mm	D-3
3.5 mm	E-4
3.75 mm	F-5
4 mm	G-6
4.25 mm	G
4.5 mm	7
5 mm	H-8
5.25 mm	I
5.5 mm	I-9
5.75 mm	J
6 mm	J-10
6.5 mm	K-10.5
7 mm
8 mm	L-11
9 mm	M/N-13
10 mm	N/P-15
11.5 mm	P-16
12 mm
15 mm	P/Q
15.75 mm	Q
16 mm	Q
19 mm	S
25 mm	T/U/X
30 mm	T/X

If you would like a printable version of this size chart, enter your email in the form box below. You will be subscribed to our newsletter when you do so.

About Devon

Devon is a work at home mom and owner/editor at Midwestern Moms and Midwestern Meals. In her spare time you can find her hanging out with her family, curled up with her Kindle Fire, or playing computer games with her hubby.

Comments

Carolyn S Maurer says

January 29, 2020 at 1:41 pm

Thanks for the neat patterns. My grandmother taught me how to crochet when I was 8. She lived with us and her crochet intrigued me. I am in the process right now teaching a young girl how to crochet. The dish cloths make an easy pattern to start. My first crochet was small doilies which became hats for my dolls. The best memory I have of my grandmother and crochet was when yarn started to be used for crochet. Even though it was the same, because my grandmother crocheted from a picture using the yarn stumped her. It then became my turn to teach her how to crochet with yarn. A memory I treasure.