The Ultimate Guide to Crochet Hook Sizes for Yarn
The Beginner’s Guide to Getting It Right — Every Time
By Wonder V Helen
Welcome, Crochet Friend!
Hey there, creative soul! 💕
Choosing the right yarn and hook combo can make or break your crochet project — especially when you’re starting out. This guide will walk you through the essentials so you never second-guess your hook size again.
Pro Tip: Save this printable near your yarn stash — it’ll be your new best friend!
Why Matching Yarn Weight & Hook Size Matters
✅ Loose stitches = floppy and shapeless
✅ Tight stitches = stiff and hard to work
The secret? The right hook size for your yarn weight — and sometimes, a little thing called gauge.
✔ Projects turn out the right size
✔ Stitches look neat
✔ Fabric feels just right
Ultimate Yarn Weight & Hook Size Chart
|
Yarn Weight |
Name (US / UK) |
Hook Size (mm / US) |
Perfect For |
Helen’s Fave Brands |
|
0 |
Lace / 1 ply |
1.6mm - 2.5mm / B-1 |
Doilies, lace shawls |
Alize, Yarnart |
|
1 |
Super Fine / 3 ply |
2.25mm - 3.5mm / B-1 to E-4 |
Baby clothes, socks |
Hobbii, Friends |
|
2 |
Fine / 4 ply |
3.5mm - 4.5mm / E-4 to 7 |
Lightweight tops, amigurumi |
Yarnart, Hobbii |
|
3 |
Light / DK / 8 ply |
4.5mm - 5.5mm / 7 to I-9 |
Blankets, accessories |
Himalaya, Alize |
|
4 |
Medium / Worsted / 10 ply |
5.5mm - 6.5mm / I-9 to K-10.5 |
Scarves, hats, home décor |
Hobbii, Yarnart |
|
5 |
Bulky / Chunky / 12 ply |
6.5mm - 9mm / K-10.5 to M-13 |
Chunky blankets, sweaters |
Alize, Himalaya |
|
6 |
Super Bulky / 14 ply |
9mm - 15mm / M-13+ |
Rugs, big scarves |
Yarnart, Hobbii |
|
7 |
Jumbo |
15mm+ |
Giant projects |
Hobbii, Himalaya |
Beginner’s Gauge Tip Section
What is Gauge (and why should you care)?
Gauge is the number of stitches and rows you get per 10cm/4”. It matters most for clothes and wearables.
👉 Always make a small swatch
👉 Measure your stitches per 10cm/4”
👉 Adjust your hook size until you match the pattern