Needle Size & Yarn Weight Information
| Needle Size Conversion Chart | |||||
| Millimeter range | US Knitting needle size | UK Knitting needle size | US Crochet hook size (letter) | US Crochet hook size | UK Crochet hook size |
| .4 mm | 16 | ||||
| .5 mm | 15 | ||||
| .6 mm | 14 | 6 | |||
| .75 mm | 13 | ||||
| .70 mm | 12 | 5 | |||
| .8 mm | 11 | ||||
| 1 mm | 10 | 4 | |||
| 1.15 mm | 9 | ||||
| 1.25 mm | 8 | 3 | |||
| 1.50 mm | 7 | 2.5 | |||
| 1.6 mm | 6 | ||||
| 1.7 mm | 5 | ||||
| 1.75 mm | 4 | 2 | |||
| 1.85 mm | 3 | ||||
| 1.95 mm | 2 | ||||
| 2.00 mm | 0 | 14 | 1 | 1 | |
| 2.25 mm | 1 | 13 | B | 0 | 0 |
| 2.5 mm | 12 | ||||
| 2.75 mm | 2 | 12 | C | 2 | |
| 3.00 mm | 11 | ||||
| 3.25 mm | 3 | 10 | D | 3 | |
| 3.5 mm | 4 | E | 4 | ||
| 3.75 mm | 5 | 9 | F | 5 | |
| 4.00 mm | 6 | 8 | G | 6 | |
| 4.25 mm | |||||
| 4.5 mm | 7 | 7 | 7 | ||
| 5.00 mm | 8 | 6 | H | 8 | |
| 5.5 mm | 9 | 5 | I | 9 | |
| 6.00 mm | 10 | 4 | J | 10 | |
| 6.5 mm | 10.5 | 3 | K | 10.5 | |
| 7.00 mm | 2 | ||||
| 7.5 mm | 1 | ||||
| 8.00 mm | 11 | 0 | L | 11 | |
| 9.00 mm | 13 | M/N | 13 | ||
| 10.00 mm | 15 | N/P | 15 | ||
| 12.00 mm | |||||
| 12.75 mm | 17 | ||||
| 15 mm | 19 | P/Q | |||
| 16 mm | Q | ||||
| 19 mm | 35 | S | |||
| 20 mm | 36 | ||||
| 25 mm | 50 | ||||
| * Please note that conversions are approximate | |||||
| Yarn Weight Conversion Chart | |||
| UK | USA | Craft Council of America Category | Australia |
| 1 ply | Laceweight | 0 | 2 ply |
| 2 ply | Fingering | 1 | 3 ply |
| 3 ply | Sock | 1 | 3 ply |
| 4 ply | Sport | 2 | 5 ply |
| DK | DK/Light Worsted | 3 | 8 ply |
| Aran | Worsted | 4 | 10 ply |
| Chunky | Bulky | 5 | 12 ply |
| Super Chunky | Super Bulky | 6 | 14 ply |
| * Please note that conversions are approximate | |||
