Hook size
Size L crochet hook: 8 mm (US L-11)
A size L crochet hook is 8 mm, labelled US L-11, and has old UK size 0. It is the recommended hook range for bulky (5) yarn, and crocheters typically choose it for chunky blankets, bulky beanies and fast cowls. Always check gauge with a swatch, because tension varies between crocheters.
By the crochetpatterns.io editorial team · Updated · Editorial policy
| Metric | US | Old UK | Suits yarn weights |
|---|---|---|---|
| 8 mm | L-11 | 0 | #5 Bulky |
What is a 8 mm crochet hook in US and UK sizes?
A 8 mm hook is US size L-11 and old UK size 0. Metric millimetres are the only measurement that is the same on every brand, so check the mm size stamped on the hook.
| Metric | US | Old UK | Yarn weights |
|---|---|---|---|
| 6.5 mm | K-10½ | 3 | #4, #5 |
| 7 mm | — | 2 | #5 |
| 8 mm (this hook) | L-11 | 0 | #5 |
| 9 mm | M/N-13 | 00 | #5, #6 |
| 10 mm | N/P-15 | 000 | #6 |
What yarn weight goes with a 8 mm hook?
A 8 mm hook is typically used with bulky (#5) yarn. Bulky yarn gives about 8–11 sc per 4 in / 10 cm and suits chunky hats, scarves and cowls, quick throws.
| Weight | Also called | Crochet gauge | Recommended hooks |
|---|---|---|---|
| #5 Bulky | Chunky, Craft, Rug, 12-ply (AU/NZ) | 8–11 sc per 4 in / 10 cm | 6.5–9 mm |
What can you make with a 8 mm hook?
2 patterns in our library use a 8 mm hook, including sturdy chunky crochet basket with handles, ribbed half double crochet chunky scarf.
Sources and scope
- Craft Yarn Council: Hooks & Needles
Reference for metric and US hook sizes. Letter and number labels vary between manufacturers; check the millimetre measurement. Old UK sizes are a separate historical convention.
- Craft Yarn Council: Standard Yarn Weight System
Source for categories 0–7 and the crochet gauge and hook ranges. These are starting guidelines; use the gauge in your pattern. Regional ply names and yards per 100 g are approximate comparisons, not CYC specifications.



