YARN WEIGHT
HOW TO INTERPRET THE CHART
First of all, keep in mind that this chart is a general guide that combines data from different sources.
As you can see from the chart above, the yardage of some yarn weight may overlap from one category to another. Why is this? Because each fibre (sheep's wool, alpaca, silk, mohair) has its own weight and structure and because the spinning method also has an impact on the final result: the number of plies, the number of twists per inch and whether or not the wool is combed will affect the number of metres contained in each 100g ball.
MEASURING KNITTING GAUGE
The gauge listed in the chart is measured over 10 cm (or 4 inches). If the yarn label gives you the suggested gauge on 1 inch (2.5 cm), simply multiply by 4 to get the 10 cm measurement.
In the example shown here, we see a sample knitted with DK PURE yarn. We can see that 11 stitches are contained in 5 cm (2 inches), which gives us a gauge of 22 stitches per 10 cm.
This gauge corresponds perfectly to the size of DK weight yarn.
*MEASURING THE WPI
WPI or "wraps per inch" is a way of measuring the yarn weight by calculating the number of times you can wrap the yarn over 1 inch (2.5 cm).
KNOWING A YARN WPI CAN BE HELPFUL
This measurement can help you to figure out the yarn weight if its label was lost. To measure the WPI of your yarn, start by winding your yarn around a ruler. The yarn should fit snugly: no overlapping or large gaps between the strands. Do not pull the yarn too hard to avoid falsifying the measurement. If you are unsure of your tension, practice with a yarn of which you know the weight.
Measure in a few different places as you would when measuring the gauge of your knitting. Use the chart provided to compare your WPI result to the corresponding yarn weight. Keep in mind that the WPI is subjective and that results vary depending on the tension of the yarn wound around the meter to be measured. Validate your result by knitting a swatch.
In the example illustrated above, you can see that the yarn has been wound 10 times over a width of 1 inch (so wpi = 10) which corresponds to a worsted weight yarn size.
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LACE WEIGHT
Lace weight yarn size is usually knitted with larger needles in order to get an openwork where the stitches are open enough to let the light through. This is the beauty of lace knitting.
Usual gauge: 33 to 40 stitches = 10 cm / 4 inches in jersey.
Recommended needle size:1.5 to 2.25 mm (#US 000 to 1)
Usual quantity of meters per 100g= 525 to 1200 meters and +.
WPI* (wraps per inch)*= 30 and +
FINGERING OR SUPER FINE WEIGHT
Fingering weight yarn is most frequently used to knit contemporary shawls and socks. If you are looking for a sock yarn, pick one with a nylon blend since fingering wool has the drawback of its quality: being thin enough to be worn in a shoe, it will pierce more easily (hence the usefulness of nylon)
Usual gauge: 27 to 32 stitches = 10 cm / 4 inches in jersey.
Recommended needle size: 2.25 to 3.25 mm (#US 1 to 3)
Usual quantity of meters per 100 grams= 360 to 480 meters
WPI* (wraps per inch)*= 24 to 30
SPORT OR FINE WEIGHT
Sport yarn weight is often found in baby knitting patterns but is not only limited to that: it can be used for all purposes
Usual gauge:23 to 26 stitches = 10 cm / 4 inches in jersey
Recommended needle size:3.25 to 3.75 mm (#US 3 to 5)
Usual quantity of meters per 100 grams= 260 to 360 meters
WPI* (wraps per inch)*= 18 to 24
DK WEIGHT
Dk yarn weight, also known as "light worsted" weight, is a yarn weight often preferred to knit sweaters. It is not too fine to knit a sweater (those who have ever knitted a garment in fingering weight know what I'm talking about!!) but it is not too thick either so it produces a light knitted fabric that is comfortable to wear in all seasons. Some people will use it to knit thick and warm stockings to wear indoors or thick shawls to wear during winter!
Usual gauge: 21 to 24 stitches = 10 cm / 4 inches in stockinette stitch
Recommended needle size: 3.75 to 4 mm (#US 5 to 7)
Usual quantity of meters per 100 grams= 200 to 290 meters
WPI* (wraps per inch)*= 12 to 18
WORSTED OR ARAN
Worsted yarn weight is a "all-purpose" yarn and is used for all types of projects but especially for clothing and accessories such as hats, mittens and scarves.
Usual gauge: 16 to 20 stitches = 10 cm / 4 inches in jersey.
Recommended needle size: 4.5 to 5.5 mm (#US 7 to 9)
Usual quantity of meters per 100 grams= 180 to 240 metres
WPI* (wraps per inch)*= 10 to 12
BULKY OR CHUNKY
Bulky weight yarn has the merit of being knitted very quickly and produces a very thick fabric. Handy for knitting a tick and warm quick project! Bulky yarn is mainly used for knitting thick clothing or accessories such as hats and cowl. It is also popular to work decorative home accessories such as cushions and throws...
Usual sample: 12 to 15 stitches = 10 cm / 4 inches in jersey.
Recommended needle size: 5.5 to 8 mm (#US 9 to 11)
Usual quantity of meters per bale of 100 grams= 120 to 160 metres
WPI* (wraps per inch)*= 7 to 8
SUPER BULKY
Bulky weight yarn has the merit of being knitted very quickly and produces a very thick fabric. Handy for knitting a tick and warm quick project! Bulky yarn is mainly used for knitting thick clothing or accessories such as hats and cowl. It is also popular to work decorative home accessories such as cushions and throws...
Usual sample: 12 to 15 stitches = 10 cm / 4 inches in jersey.
Recommended needle size: 5.5 to 8 mm (#US 9 to 11)
Usual quantity of meters per bale of 100 grams= 120 to 160 metres
WPI* (wraps per inch)*= 7 to 8
JUMBO OR ROVING
Bulky weight yarn has the merit of being knitted very quickly and produces a very thick fabric. Handy for knitting a tick and warm quick project! Bulky yarn is mainly used for knitting thick clothing or accessories such ashats and cowl. It is also popular to work decorative home accessories such as cushions and throws...
Usual sample: 12 to 15 stitches = 10 cm / 4 inches in jersey.
Recommended needle size: 5.5 to 8 mm (#US 9 to 11)
Usual quantity of meters per bale of 100 grams= 120 to 160 metres
WPI* (wraps per inch)*= 7 to 8
