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How to calculate yardage from one weight to another
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May 22, 2019 16:12:58   #
laineybug
 
Hi everyone! Newbie to the forum here. First I want to thank you for adding me and tell you a little about myself. Retired, living on a barrier island off coast of Georgia where I grew up. I have a daughter, four grandchildren and a wirehair fox terrier that keeps me on my toes. My first crafting love is designing and sewing children’s garments, specifically heirloom garments with smocking, embroidery, lace etc. I also love crocheting (because I can take it out on my patio and enjoy the sea breez) that I learned from my mother and tatting I learned from my grandmother.

So, I’ve decided to branch out a bit and design a crocheted shawl for myself rather than use a published pattern. It will be rectangular and easy peasey combo of stitches—you gotta walk before you run, right?

I have crocheted a swatch in DK weight yarn to see if my idea would work—it does. And I know how many yards of DK weight yarn it takes for the swatch. From the dimensions of the swatch and yarn yardage I can calculate how much DK weight yarn I will need for a shawl 20” x 60”.
BUT I want to do the shawl in SPORT WEIGHT yarn to make it a bit lighter and lacier. I don’t have any sport weight yarn to create a swatch. Is there a rule of thumb that allows you to convert yardage from one weight to another? In other words if a shawl in DK weight yarn requires 1,200 yards, how many yards will I need for the shawl in SPORT WEIGHT?

Thanks in advance for your help.
Lainey
 
May 22, 2019 16:14:42   #
targa416 (a regular here)
 
I think a sure fire way to find out would be to swatch using sport weight yarn. Perhaps others will have easier ideas.
May 22, 2019 16:18:24   #
Knitting in the Rockys (a regular here)
 
laineybug wrote:
Hi everyone! Newbie to the forum here. First I want to thank you for adding me and tell you a little about myself. Retired, living on a barrier island off coast of Georgia where I grew up. I have a daughter, four grandchildren and a wirehair fox terrier that keeps me on my toes. My first crafting love is designing and sewing children’s garments, specifically heirloom garments with smocking, embroidery, lace etc. I also love crocheting (because I can take it out on my patio and enjoy the sea breez) that I learned from my mother and tatting I learned from my grandmother.

So, I’ve decided to branch out a bit and design a crocheted shawl for myself rather than use a published pattern. It will be rectangular and easy peasey combo of stitches—you gotta walk before you run, right?

I have crocheted a swatch in DK weight yarn to see if my idea would work—it does. And I know how many yards of DK weight yarn it takes for the swatch. From the dimensions of the swatch and yarn yardage I can calculate how much DK weight yarn I will need for a shawl 20” x 60”.
BUT I want to do the shawl in SPORT WEIGHT yarn to make it a bit lighter and lacier. I don’t have any sport weight yarn to create a swatch. Is there a rule of thumb that allows you to convert yardage from one weight to another? In other words if a shawl in DK weight yarn requires 1,200 yards, how many yards will I need for the shawl in SPORT WEIGHT?

Thanks in advance for your help.
Lainey
Hi everyone! Newbie to the forum here. First I wa... (show quote)


There is no formula for doing this. You'll have to swatch with sport weight. Many factors play into yardage including the hook/needle size used, the tension of each individual, etc.
May 22, 2019 16:21:08   #
MMWRay (a regular here)
 
The quick answer is no. Yarn varies so much any math you do will be a very, very rough estimate. So rough it will not be useful. Sounds like you need to buy some sport weight yarn and do your gauge again.
May 22, 2019 16:23:45   #
laineybug
 
Thank you, that is what I was thinking.
May 22, 2019 16:24:39   #
laineybug
 
Yes, I had thought about the hook size and other factors.
 
May 22, 2019 16:25:11   #
ChasingRainbows (a regular here)
 
There is no direct correlation between yarn weight and yardage. There may even be differences among yarn brands and fibers.

The only way to get the information you need is to buy some sport weight yarn and swatch.

Example -

Cascade 220 Sport

164 yards(150 meters)
Unit weight - 50 grams (1.76 ounces)
Gauge - 22.0 to 24.0 sts = 4 inches
Needle size - US 5 - 6 or 3.75 - 4mm
Hook size - 3.75mm (F) - 4.5mm

KnitPicks Wool of the Andes Sport

Sport (12 wpi) ?
Wraps per inch
Meterage - 137 yards(125 meters)
Unit weight - 50 grams (1.76 ounces)
Gauge - 24.0 sts = 4 inches
Needle size - US 3 - 5 or 3.25 - 3.75mm
Hook size -3.5 mm (E)
May 22, 2019 16:25:44   #
laineybug
 
Yes I had thought about hook size
May 22, 2019 16:27:33   #
laineybug
 
Thank you! I guess I’ll buy some Sport weight yarn!
May 22, 2019 16:32:38   #
EqLady (a regular here)
 
Having read all these comments, I would add that there is probably not enough difference between dk and sport to matter in a shawl. Still, better to be safe than sorry.
May 22, 2019 17:19:44   #
knit4ES (a regular here)
 
I agree with the above comments.
I went to Ravelry and found this crochet baby blanket made in sport weight yarn and that finishes at about 33 by 39 inches.... which is 1287 square inches.
You want to make your shawl 20 by 60 inches.... which is 1200 square inches; that is very close to the same.
It calls for 1300 to 1500 yards of sport weight yarn.... Of course the stitch pattern can change the amount of yarn needed.
https://www.ravelry.com/patterns/library/little-forest-baby-afghan-2
 
May 22, 2019 17:19:45   #
knit4ES (a regular here)
 
Also, welcome to KP
May 22, 2019 17:52:46   #
tdorminey (a regular here)
 
Before buying more yarn, I would re-work the swatch with a needle/hook 2-3 sizes larger and see how much it changes the swatch size and gauge. The larger needles would make the finished fabric lighter and airier, and that seems to be what you are after??
May 22, 2019 18:41:56   #
laineybug
 
Thank you so much everyone!
May 23, 2019 06:32:47   #
betty boivin (a regular here)
 
Welcome!
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