Combining Yarn Weights in Stranded Colourwork (2024)

Have you always wanted to knit stranded colourwork or Fair Isle projects, but felt like you had to buy the whole yarn shop before you could even begin? Not so! If you’re planning to try this kind of pattern, let me dispel the myth that you need to buy exactly what the designer used. It’s simply not true.

When knitting colourwork projects, it IS possible (and FUN) to choose from your stash of odds and ends and leftovers. You CAN mix different yarns and still get a lovely match! Here are my best tips for getting started…

1. Colourwork yarns don’t have to be the same weight

While it’s best to follow pattern instructions for the weight of the main colour (MC) yarn, the contrast colour (CC) yarns don’t have to match precisely. For example, for CCs in a DK weight project, you could use sport, DK, worsted, or aran-weight yarns successfully. You could also hold a sock yarn doubled or a lace-weight yarn tripled.

2. Colourwork yarns don’t have to be the same brand or type

You’re entitled to your doubts, but I encourage you to try it and see! When working colourwork projects, there’s no reason you can’t combine yarns that are fluffy, hairy, crunchy, or single-ply with plied and superwash yarns. Of course, each yarn will lend something of its own quality to the finished knit, but this can be an exciting benefit. We’ve written more about this in Choosing a Yarn for Your Colourwork Sweater and Swatching for Colourwork.

3. Colourwork yarns can be doubled

You can hold yarns doubled in colourwork to get a suitable weight. For example, if you have a lot of odds and ends in sock weight but want to knit a colourwork yoke sweater in worsted or aran weight, you can hold the sock-weight yarns doubled to get a similar weight. This opens up even more of your yarn stash to be used in your next colourwork project! If this interests you, read our posts on holding yarns doubled and creating marls.

In this Sunshine hat, Alexa used sock-weight yarns held double for some of the contrast colours.

More quick tips for combining yarns of different weights and types in stranded colourwork projects

  • When using a CC yarn that’s a different weight than your MC, choose a yarn that’s a little bit thicker or thiner than the MC, but not TOO much thinner – or the pattern won’t show up well. I’d estimate that the CC yarn shouldn’t be more than one weight off your MC. Check out the Craft Yarn Council Standard Yarn Weight System for more info.
  • If you want to use your sock-weight yarn as the CC in a DK, worsted, or aran-weight project, I’d suggest you hold it doubled, so it’s plump enough to hold up to the MC yarn.
  • Hold the thinner of two yarns in the ‘dominant’ position – that is, allow it to be pulled up from underneath the other yarn when working the pattern.

Don’t just take my word for it

Combining yarns across weights and types in colourwork projects is one of my FAVOURITE ways to play in knitting, but YOU won’t know for sure until you try! You’re gonna have to get your yarn combination on the needles to know how it works, so go for it! Like everything else in life, you won’t know for sure until you know for sure. Even after a decade of designing knits, I still don’t know FOR SURE if a combination is going to work until I get it on the needles.

Combining Yarn Weights in Stranded Colourwork (7)

Get to it!

I hope these tips expand the possibilities you see in your yarn stash and give you the confidence you need to begin working some stranded colourwork projects using yarn you already have. There’s really no need to buy the whole yarn shop before you begin!

Perhaps you’re like me – an avid yarn collector who can’t bear to throw away the quarter or half skeins that pile up after projects are finished. If this is the case for you, I’d recommend getting started with some simple colourwork projects to use up those odd balls. We’ve got a few lovelies for you – just click a photo to get the pattern!

~ Emily

Combining Yarn Weights in Stranded Colourwork (2024)

FAQs

How do you combine yarn weights? ›

Two fingering weight yarns held together yields approximately a DK-weight yarn. – Two sport weight yarns held together yields approximately a light worsted weight yarn. – Two DK-weight yarns held together yields approximately a worsted/heavy worsted weight yarn.

Do 2 strands of 4 ply equal DK? ›

It's possible to substitute multiple strands of finer yarn for a single strand of a heavier yarn. For example, holding two strands of 4-ply yarn will give you the same weight as DK.

How do you mix different yarn weights? ›

When mixing yarn weights, creating swatches is even more critical. Create a swatch for each yarn weight and adjust hook sizes as needed, ensuring that they have similar gauge measurements, at least in terms of the number of stitches per 10 cm. This will help maintain consistency in the finished project.

What does 2 strands lace weight equal? ›

2 strands lace weight = 1 strand fingering. 2 strands sock weight = 1 strand double knit. 2 strands fingering weight = 1 strand worsted. 2 strands double knit = 1 strand aran.

Can I combine two strands of one weight to equal a larger weight? ›

Yes, you may use two strands of a finer weight yarn held together to approximate the gauge of a thicker yarn.

Why hold two strands of yarn together? ›

Blending Colours

The first example is one most people think of when they think of holding yarns double. By holding two different colours together, you can create something totally unique, like mixing paints. Clarity uses two different colours held double, one softening and darkening the other.

Why use two strands of yarn? ›

But some patterns call for double-stranding two like-weights together in order to create a thicker fabric. For example, when you double-strand two sport-weight strands together you get a fabric and gauge in the worsted-weight realm.

Do two strands of DK make worsted? ›

For example, it can be possible to use two strands of DK weight yarn to make a worsted/aran weight yarn, or two strands of worsted/aran to make a chunky yarn. This can certainly be done with success, but only if you knit a swatch first. In case you haven't noticed, the lesson here is: always knit a swatch first!

Do two strands of DK make chunky? ›

6 stitches or less

2 strands of sock = sport weight to DK. 2 strands of sport = DK or light worsted. 2 strands of DK = Worsted or Aran. 2 strands of Worsted = Chunky.

What does DK stand for in yarn? ›

DK stands for double knit yarn or wool. You might still see the term "double knit wool" in older knitting patterns. Most modern patterns and yarns just use the initials DK.

Can you mix DK and worsted? ›

Colourwork yarns don't have to be the same weight

For Max's Anthology hat, I combined one worsted weight, two sport weights, and two DK weight yarns – and they all play nicely together!

What size crochet hook for 2 strands of DK? ›

Crochet hook sizes and yarn weight
Yarn WeightHook Size
Yarn WeightSport / 5 plyHook Size3.5 - 4.5mm
Yarn WeightDK / 8 plyHook Size4.5 - 5.5mm
Yarn WeightAran / Worsted / 10 plyHook Size5.5 - 6.5mm
Yarn WeightChunky / 12 plyHook Size6.5 - 9mm
4 more rows
Aug 15, 2022

Do two strands of worsted equal bulky? ›

2 strands of Worsted = Chunky. 2 strands of Aran = Chunky to Super Bulky. 2 strands of Chunky = Super bulky to Jumbo.

How do you use two yarns at once? ›

The only thing you need to remember is to always treat two strands of yarn as one. Make sure you don't split the yarn when you insert the needle into a stitch to knit or purl it. And make sure you use both strands of yarn when you wrap the needle with yarn to make a new stitch.

How do you join worsted weight yarn? ›

With the overlap method, you overlap your working yarn with the new yarn and knit into the next few stitches with both yarns held together. Then, just let go of the old yarn and continue knitting with the new yarn. Later, weave in the ends at the join and you're good to go. Easy!

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