# Quick Answer: What is yarn per inch?

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## How do you calculate WPI?

To calculate the wraps per inch (WPI), simply wrap the yarn around a pencil or knitting needles. Don’t wrap too tightly, just provide the normal slack you would if you were knitting. Wrap the yarn for approximately 3-4” along the pencil/needle. Use a ruler and count the number of wrap per inch.

## How is yarn weight measured?

Yarn weight is calculated by the diameter of the strand. … Wrapping the yarn around a pencil (or any uniform object with consistent circumference, like a dowel, knitting needle, etc.) determines yarn weight because bulky yarns take less wraps than light weight yarns.

## How do I know what type of yarn I have?

Count the wraps within the inch, and compare against these measurements below:

1. Lace or 2 ply: 35 or more.
2. Light fingering, sock, or 2 ply: 22 – 34.
3. Fingering or 4 ply: 19 – 22.
4. Sport: 15 – 18.
5. DK: 12 – 17.
6. Worsted or Aran: 9 – 11.
7. Bulky or Chunky: 8 – 10.
8. Super Bulky or Super Chunky: Anything that has 7 or less wraps per inch.

## What is a WPI tool?

Our WPI Tool is a handy device for all fiber artists who want to measure their fiber’s “wraps-per-inch”. Two yarns that have the same WPI can be exchanged. … There are markings for up to 3 inches which allows you to calculate a more accurate average WPI on certain hairy yarns.

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## How do I use WPI tool?

To use a WPI tool, you’ll literally wrap the yarn around and around, then count how many wraps you were able to fit in 1″ width. Before you go wrapping all your label-less yarns, try with a yarn that you already know the weight.

## What is 12 WPI yarn?

Measure the number of wraps per inch (2.5 cm). The number of wraps will act as a gauge to assess the thickness of unmarked yarn; for example 12 wraps per inch is 12 WPI, and is used to calculate how much yarn is required for various articles so that 12 WPI is equivalent to 8 ply (worsted weight, medium weight) yarn.

## What does 50g yarn mean?

50g stands for “50 grams”. … 50 grams of yarn is equivalent to approximately 1.76 ounces of yarn. So if you have 2 x 50 gram balls it is equivalent to a 100-gram ball of yarn.