6.5 mm knitting needle
6.5 mm
US 10.5 · UK 3 · Chunky
What this size is for
Chunky yarn and loose-gauge accessories. The American half-size exists because the scale ran out of integers.
In each scale
| Diameter | 6.5 mm |
| US size | 10.5 |
| UK / Canadian size | 3 |
| Yarn weight | Chunky |
Nearby sizes
| mm | US | UK | Yarn |
|---|---|---|---|
| 5 | 8 | 6 | Worsted, aran |
| 5.5 | 9 | 5 | Aran |
| 6 | 10 | 4 | Aran to chunky |
| 6.5 | 10.5 | 3 | Chunky |
| 7 | — | 2 | Chunky |
| 8 | 11 | 0 | Chunky to bulky |
Frequently asked questions
What is a 6.5 mm knitting needle in US and UK sizes?
US 10.5 and UK 3. The millimetre figure is the actual diameter and the only one that means the same thing everywhere.
Does this size exist in both scales?
Yes, and unusually the numbers agree: 10.5 in both. This is the only size where that happens.
What yarn suits a 6.5 mm needle?
Chunky. Chunky yarn and loose-gauge accessories. The American half-size exists because the scale ran out of integers.
Why do the two scales run in opposite directions?
The British scale counts down from the thickest wire in a gauge, in the same way a wire gauge does — more drawing operations, higher number, thinner. The American scale simply counts up from the finest needle. Neither is wrong; they were never designed to be compared, and the only size where the numbers coincide is 4.5 mm, which is size 7 in both.