16 mm crochet hook
A 16 mm hook is a US size Q. Buy by the millimetre number — it's printed on every hook and it means the same thing everywhere.
Jumbo roving, T-shirt yarn.
The same hook in every system
| Millimetres (the one that always works) | 16 mm |
|---|---|
| US | Q |
| UK | no UK size |
| Japanese 号 | no Japanese size unverified |
| Type | jumbo |
Systems with no exact match
16 mm has no direct equivalent in 2 of the three systems. These are the closest hooks, with the size difference spelled out — substitute at your own gauge risk.
| System | Closest hook | Actual size | Difference |
|---|---|---|---|
| UK | 000 | 10 mm | -6 mm |
| Japanese | 8mm | 8 mm | -8 mm |
Yarn weights that suit this hook
1 standard yarn weight list 16 mm inside their recommended hook range. Expected single crochet gauge over 4 inches is shown as a range — the CYC figures assume a mid-range hook, so at 16 mm you will land toward the tight end. Swatch before you commit.
| US weight | UK | Japan | sc / 4 in |
|---|---|---|---|
| Jumbo | Jumbo | — | 6 and fewer |
Aluminium, ergonomic and Japanese-style options in this size.
View on Amazon USShopping elsewhere? Amazon UAE
As an Amazon Associate we earn from qualifying purchases. Links to Amazon on this page are affiliate links; buying through them costs you nothing extra.
Nearby sizes
All hook sizes · US to Japanese hook chart
Last updated 2026-08-30.