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日本と海外(US/UK)の異なるサイズのかぎ針が並んでいる様子

Crochet A to Z

Global Hook Size Guide: Comparing Japan, US, Millimeters, and Addi Standards

February 15, 2021

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Notice: This page is automatically translated. We are working on manual refinement.

When you are engrossed in crocheting, have you ever found yourself becoming interested in the tools you use?
Of course, I can't let go of my beloved, wonderfully easy-to-use crochet hooks, but for some reason I started to wonder what other crochet hooks there were out there.

After trying out various crochet hooks from easily available domestic manufacturers, I moved on to foreign crochet hooks.
When I search for "crochet hook," I find many crochet hooks I've never seen before, and my interest never ends.

It's not just tools that will broaden your interests; once you've knitted all the Japanese creations you can, you might want to find your favorite recipes from overseas.
In such cases, to determine which size crochet hook to use, you will need to compare the sizes of crochet hooks used in Japan and overseas.

Besides"English pattern term translation"or"Knitting Symbols [English Version]" page, so please use it if you need it.

かぎ針編みAtoZ 海外のかぎ針いろいろ

Comparing crochet hook sizes

So, I decided to compare the sizes of Japanese crochet hooks with those available overseas (for when I'm shopping for crochet hooks overseas, as I'm a tool lover).
There is a table at the bottom of the page.

One of the things I looked into was the crochet hook sizes in America, where knitting is popular.
Craft Yarn CouncilWe used the standards of this organization, which aims to establish industry standards and guidelines for knitting, as a reference.

The other is a historic German knitting needle manufacturer.AddiCrochet hook size.
This is based on the size chart for Addi crochet hooks sold at US retailers.
Addi's crochet hooks have a unique design that is different from Japanese ones, making them a must-have for tool lovers.

In the table below, the left side is Japanese crochet hooks and the right side is overseas crochet hooks, with the dividing line being millimeters.
Please use this as a reference if you ever need anything.

Please note that the notation and sizes may vary depending on the manufacturer, so please use this as a guide only.
When shopping, please check the product description and packaging for accurate information.

Comparison of Japanese and overseas crochet hook sizes

JapanMilliAmericaAddi
1/01.8 mm
2/02 mmA
2.25 mmB-1
3/02.3 mm
4/02.50 mmB
2.75 mmC-2
5/03.0 mmC
3.125 mmD
3.25 mmD-3D
6/03.50 mmE-4E
3.75 mmF-5
7/04 mmG-6F
4.25 mmG
7.5/04.50 mm7G
8/05 mmH-8H
5.25 mmI
9/05.50 mmI-9I
5.75 mmJ
10/06 mmJ-10J
6.50 mmK-10½
Jumbo 7mm7 mmK
Jumbo 8mm8 mmL-11L
9 mmM/N-13M
Jumbo 10mm10 mmN/P-15N
11.50 mmP-16
Jumbo 12mm12 mmO
Jumbo 15mm15 mmP/QP
15.75 mmQ
16 mmQ
19 mmS
20 mmS
25 mmT/U/X
30 mmT/X
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  • The author of this article

Ronique

I am a crochet artist with years of experience in design, having authored 5 books and contributed to over 70 co-authored publications. In addition to my social media presence, I currently share my patterns on Etsy, Ravelry, and my own shop. My mission is to explore and create designs that are both joyful to crochet and a pleasure to use in daily life.▶Profile and Achievements

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