Conversion Chart

Conversion Chart
EU Metric.  US Sizes.
0.6mm.         14 steel
1mm.            12 steel
1.25mm.        7 steel
1.5mm.           6 steel
1.75mm.        5 steel
2mm.
2.25mm.          B-1
2.5mm.
2.75mm.           C-2
3mm.    
3.25mm.           D-3
3.5mm.             E-4
3.75mm.           F-5
4mm.                G-6
4.5mm.             7
5mm.                H-8
5.5mm.             1-9
6mm.                J-10
6.5mm.             K-101/2  
7mm.
8mm.                L-11
9mm.                M-13  
10mm.              N-15
12mm.              P
15mm.              Q (16mm)
20mm.              S(19mm)

Hooks and other equipment

Crochet Hooks 
The hook lip grabs the yarn to form the loops and the shank determines the size of the loop. The crochet handle gives weight to the tool and provides a good grip. 
1. The tip of the hook can also be called the throat or the lip.
2. The next part is called the shank.
3. Then the thumb rest.
4. Then the handle.

Alternative Hook Handles
1. A metal hook with a plastic handle, maybe more comfortable. There are 3 parts to this hook. The 1st is the metal shank and hook.
2. This hook has an easy grip thumb rest.
3. A comfortable plastic handle.

Hook Types
1. Lace hooks- 0.6mm to 1.75mm
2. These hooks are used for fine lace crochet.
3. Use the point protector as this hook is very fine.

Metal Hooks
Some ranges of aluminium hooks are available in bright colours - a different colour for each size, which can be handy for picking up the right size at a glance.

Wooden Hooks
Hardwood and bamboo hooks are very attractive and lighter in weight than metal hooks. They also provide a good grip to prevent your fingers from slipping when crocheting.

Plastic Hooks
Plastic hooks are not as precisely made as metal and wooden hooks, but they come in great colours, so are enjoyable to work with.

Jumbo Hooks
The largest crochet hook sizes - from 10mm (US size N-15) to 20mm (US size S) are made in plastic. They are used for making a thick crochet fabric very quickly.

CreateCrochet : Materials

CreateCrochet : Materials: Yarns  -
Cotton - Cotton crochet threads, Fine weight cotton yarns, Matt cotton, Mercerized cotton.
Wool - Merino wool, Wool.
Luxury - Silk, Cashmere.
Other Natural Fibres - Hemp, Ramie.
Synthetic Fibres - Nylon, Microfibres, Acrylic.
Yarn Blends - Natural and synthetic mixes, Wool and cotton mixes, Synthetic only mixes.
Multicoloured Yarns - Variegated wool yarn, Variegated cotton yarn.
Novelty Yarns and Textural Effects - Tape yarn, Metallics, Boucle yarn, Mohair, Novelty Shaggy Fur yarn.
Unusual Yarns - Fabric ( t-shirt) yarn, Wire, String, Plastic Bags.

Choosing Colours

The Colour Wheel
White to cream..
Yellow to Beige..
Orange to Gold..
Light red to Maroon..
Pale pink to Crimson..
Lilac to Violet..
Light blue to Royal blue..
Sky blue to Marine blue..
Pale aqua to Turquoise..
Pale green to Darker greens.

Yarn Labels

Yarn Labels 

The Yarn label will include, the recommended hook size, the tension square, the shade/colour, the dye lot number, the weight or skein size - ie: 10g 25g 50g 100g 200g.
The fibre content, washing instructions, ironing instructions.
Also noted here is whether bleach can be used or Dry-cleanable only.

Yarn Weights

Yarn Weights 

Lace - 1.6 - 2.25 mm hooks.
Super Fine - 2.25 - 3.5 mm hooks.
Fine - 3.5 - 4.5 mm hooks.
Light - 4.5 - 5.5 mm hooks.
Medium - 5.5 - 6.5 mm hooks.
Bulky - 6.5 - 9 mm hooks.
Super Bulky - 9 mm and larger hooks.

Materials

Materials 

Yarns  - Cotton - Cotton crochet threads, Fine weight cotton yarns, Matt cotton, Mercerized cotton.
Wool - Merino wool, Wool.
Luxury - Silk, Cashmere.
Other Natural Fibres - Hemp, Ramie.
Synthetic Fibres - Nylon, Microfibre, Acrylic.
Yarn Blends - Natural and synthetic mixes, Wool and cotton mixes, Synthetic only mixes.
Multicoloured Yarns - Variegated wool yarn, variegated cotton yarn.
Novelty yarns and Textural Effects - Tape yarn, Metallics, Boucle yarn, Mohair, Novelty Fur yarn.
Unusual Yarns - Fabric, Wire, String, Plastic bags.