Crochet

Stitches

• Chain (ch)
• Single Crochet (sc)
• Half Double Crochet (hdc)
• Double Crochet (dc)
• Treble Crochet (tr)
• Slip Stitch (sl st)
• Single Crochet back loop only (sc blo)
• Herringbone Half Double Crochet (hhdc)
• Bobble (bo)

 

Techniques

• Slip knot
• Magic Ring
• Increases (sc inc)
• Decreases (sc dec)
• Joined rounds
• Continuous rounds
• Sl st to join

Hook Sizes

Crochet hooks come in a standard set of sizes, always measured in millimeters, and often assigned a corresponding size letter and number. Be careful not to confuse the mm size, and the hook size. 

2.25 mm	B-1
2.5 mm
2.75 mm	C-2
3.125 mm	D
3.25 mm	D-3
3.5 mm	E-4
3.75 mm	F-5
4 mm	G-6
4.25 mm	G
4.5 mm	7
5 mm	H-8
5.25 mm	I
5.5 mm	I-9
5.75 mm	J
6 mm	J-10
6.5 mm	K-10 ½
7 mm
8 mm	L-11
9 mm	M-13
10 mm	N-15
11.5 mm	P-16
12 mm
15 mm	P/Q
15.75 mm	Q
16 mm	Q
19 mm	S
25 mm	T/U/X
30 mm	T/X