That is called the weight.
It depends how thick you want it. The thinner you want it, the more you'll get, and vice versa if you want thicker.
It can vary greatly depending on your yarn tension and the size of the hook you are using. The more tension and the smaller the hook, the more yarn it will take. It also depends upon the type of yarn you are using. Thinner yarn (such as baby yarn or sport weight yarn) will require more yards to complete 1 square foot. Thicker yarn will require less yards to complete 1 square foot.
Aran yarn is in category 4, worsted weight. Category 4 yarns are not all the same, however. You will find some thinner and some thicker yarns in that same category. I think Aran is generally speaking on the thicker end of the category.
String, it is stronger than yarn is.
A direct yarn count is a numerical representation of the fineness of a yarn. The Denier system is an example. A yarn with a Denier number of 75 weighs 75 g per 9,000 m of yarn. The higher the number, the thicker the yarn.
it can but to make the yarn stronger it is often mixed with something else like wool
Denier is a unit of measurement applied to silk, rayon or nylon yarn. It is equal to the weight in grams of 9000 meters of the yarn. Generally, the higher the denier number, the thicker and more durable the resulting fabric will be.
Denier is a unit of measurement applied to silk, rayon or nylon yarn. It is equal to the weight in grams of 9000 meters of the yarn. Generally, the higher the denier number, the thicker and more durable the resulting fabric will be.
4ply is NOT a yarn weight. Many 4ply yarns in the US are worsted weight. DK is a lighter yarn weight.
Perhaps you are referring to sport weight yarn? It's 5-ply, so a little thicker than sock yarn. It usually produces 12 wraps per inch.
"Double knit," refers to the weight or thickness of the yarn. Double knit is between sport weight and worsted weight. It is named for the knitting technique that most often calls for this weight: double knitting. Double knitting is the knitting of a two sided fabric that is reversable with a two color pattern on one side and the negative of that pattern on the reverse side. It is called double knitting because both sides are knit at the same time on one set of needles. "4 ply" refers to the number of individual strands twisted together to form a yarn. A yarn with two strands is called "2 ply," and so on. The number of plies determines, to a degree, the fluffiness or smoothness of a yarn. Yarn with more plies is generally smoother and less fluffy. The number of plies does not determine the weight or thickness of the yarn. It is possible to have a double knit yarn that is also 4-ply, or to have a thicker yarn that is has more or fewer plies. The same is true with a thinner yarn.
Bamboo yarn is more sustainable than cotton yarn because bamboo grows quickly and requires less water and pesticides. Bamboo yarn is also softer and silkier than cotton yarn, but cotton yarn is more durable and can withstand more wear and tear.