Old UK and Canadian sizes to US sizes
Type a value in UK to get it in US instantly.
8US
That's about the same as the needle for worsted yarn.
Convert the other way: US to UK
What it means
Which yarn suits that needle?
Typical needle sizes for each yarn weight; the ball band and your tension swatch have the final word.
The math
How to convert UK to US
US and UK sizes are tables: US 6 = UK 8 = 4 mm, US 8 = UK 6 = 5 mm. Japanese size n is 2.1 + 0.3 × n mm.
Example: 6 UK = 8 US.
Every unit
That needle in every system
Tables
UK to US conversion table
| UK | US |
|---|---|
| 0 UK | 11 US |
| 3 UK | 10.5 US |
| 4 UK | 10 US |
| 5 UK | 9 US |
| 6 UK | 8 US |
| 7 UK | 7 US |
| 8 UK | 6 US |
| 9 UK | 5 US |
| 9.5 UK | 4 US |
| 10 UK | 3 US |
| 12 UK | 2 US |
| 13 UK | 1 US |
| 14 UK | 0 US |
US to UK conversion table
| US | UK |
|---|---|
| 0 US | 14 UK |
| 1 US | 13 UK |
| 2 US | 12 UK |
| 3 US | 10 UK |
| 4 US | 9.5 UK |
| 5 US | 9 UK |
| 6 US | 8 UK |
| 7 US | 7 UK |
| 8 US | 6 UK |
| 9 US | 5 UK |
| 10 US | 4 UK |
| 10.5 US | 3 UK |
| 11 US | 0 UK |
Quick answers
Quick answers
- How many US is 1 UK?
- 1 UK is 10.875 US.
- How many US is 10 UK?
- 10 UK is 3 US.
- How many US is 6 UK?
- 6 UK is 8 US.
The units
About these units
Old UK and Canadian sizes (UK)
Wire-gauge numbers that fall as the needle grows.
US sizes (US)
Numbers that rise with the diameter.
Keep going