Handy Needle / Hook Conversion Chart

Here's a super handy needle conversion chart for converting UK needle and hook sizes to US needle or hook sizes.

2.00 mm - US 0
6.00mm - US 10
2.25 mm - US 1
6.5 mm - US 10.5
2.50 mm - US 1½
7.00 mm -
2.75 mm - US 2
7.50 mm -
3.00mm - US 2½
8.00 mm - US 11
3.25 mm - US 3
9.0 mm - US 13
3.50 mm - US 4
10.0 mm - US 15
3.75mm - US 5
12.0 mm - US 17
4.00 mm - US 6
15.0 - 16.0 mm - US 19
4.5 mm - US 7
19.0 mm - US 35
5.00 mm - US 8
20 mm - US 36
5.50mm - US 9
25 mm - US 50