Wondering how to make bulky yarn from the lighter-weight yarn you already have? This is one of the most useful tricks in any crocheter or knitter’s toolkit — and it requires zero special equipment, no felting, no spinning, and no extra purchases. You can turn any light or medium weight yarn into bulky or super bulky weight in seconds using a technique called holding strands together.

This how to make bulky yarn trick works for both knit and crochet, and it’s perfect for using up scraps, achieving chunky textures with finer yarns, or recreating a pattern when you can’t find the exact bulky yarn called for. Watch the quick video tutorial below, then keep reading for the step-by-step written instructions and pro tips.

Watch the Video Tutorial

The video walks you through every step in about 2 minutes. Watching it once makes the technique click instantly.

Why You’ll Love Learning How to Make Bulky Yarn This Way

The hold-strands-together method is the most flexible yarn-weight hack out there:

✔ Use yarn you already have — no need to buy bulky yarn for chunky projects
✔ Perfect for using up scraps and odd skeins
✔ Create custom color combinations no commercial yarn offers
✔ Achieve the exact weight your pattern calls for
✔ Learning how to make bulky yarn this way works for both knit AND crochet
✔ No special tools required — just yarn and your hook/needles
✔ Knit in any color you love, even if it doesn’t come in bulky
✔ Cost-effective alternative to buying expensive chunky yarn

How to Make Bulky Yarn from Thinner Yarn

The trick is simple: hold multiple strands of yarn together as one while you knit or crochet. Here’s how to make bulky yarn step by step:

Step 1: Choose Your Yarn

You can use any combination — two skeins of the same yarn, two different colors, or even different fibers (just keep weights similar for consistent results). The most common combinations when learning how to make bulky yarn are:

• 2 strands of #3 (DK weight) → roughly equivalent to #5 (bulky)
• 2 strands of #4 (worsted weight) → roughly equivalent to #6 (super bulky)
• 3 strands of #2 (sport weight) → roughly equivalent to #5 (bulky)
• 3 strands of #3 (DK weight) → roughly equivalent to #6 (super bulky)

Need to source thinner yarn? Red Heart Super Saver (worsted weight) and Caron Simply Soft are great starter yarns for doubling up.

Step 2: Pull Strands from Each Skein

Pull a working strand from each skein. If you’re using one skein, pull one strand from the center pull AND one from the outside — that way you can use a single skein to double the weight without wasting yarn.

Step 3: Hold Strands Together as One

Hold the strands parallel to each other and treat them as a single strand. Insert your hook or needles through both strands at the same time when working each stitch. Don’t twist them together — just keep them aligned.

Step 4: Adjust Your Hook or Needle Size

Use a hook or needle size appropriate for the new combined weight — usually 1-2 sizes larger than what the original yarn calls for. Check your gauge before committing to a project, because doubled yarn can behave slightly differently than commercial bulky yarn.

Step 5: Check Your Gauge

Always swatch! Work up a 4×4 inch test swatch and measure your stitches per inch. Compare to the gauge called for in your pattern, and adjust hook/needle size up or down to match.

Pro Tips for Working with Held Strands

• Use a yarn bowl or two separate bowls to keep strands from tangling as you work
• Untwist occasionally as you crochet or knit — the strands can naturally twist around each other over time
• Match fiber content when possible (e.g., two acrylics or two cottons) so your finished piece washes and wears consistently
• Mix colors intentionally — holding two different colors creates a beautiful heathered or marled effect
• Calculate yardage carefully — you’ll use twice (or three times) the yardage compared to using a single strand
• Buy extra yarn if you’re working from a single skein — running out mid-row is a real heartbreak when working from a center-pull-plus-outside combo
• Tools like a yarn swift and ball winder help wind doubled yarn into a single cake for easier crocheting

For more on matching yarn weights, check out the Craft Yarn Council weight system. Yarnspirations and Lion Brand are great resources for sourcing yarn at every weight.

When to Use This Technique

• Chunky blankets, throws, and afghans — when you want that cozy super-bulky look without buying specialty yarn
• Chunky hats, scarves, cowls, and accessories for fast weekend projects
• Using up yarn scraps — combine leftovers into a marled bulky combo
• Custom color combinations not available in commercial bulky yarn
• Substituting in a pattern when you can’t find the exact bulky yarn called for
• Adding warmth and texture to any project

Frequently Asked Questions

How do I make bulky yarn from any weight yarn? Yes! The how to make bulky yarn principle works with any weight. The number of strands you need just depends on how thick you want the final yarn to be — generally 2 strands of worsted = super bulky, 2 strands of DK = bulky.

Will my project use more yarn this way? Yes — you’ll use 2-3x the yardage compared to a single strand. So if a pattern calls for 200 yards of bulky yarn, you’ll need about 400 yards of worsted (if doubling).

Does the how to make bulky yarn trick work for knitting too? Yes! The same technique works exactly the same way for knitting — just hold the strands together when you knit each stitch.

Can I mix different colors? Absolutely! Mixing two complementary colors creates a beautiful marled or heathered look that you can’t buy in stores.

Can I mix different fiber types? You can, but be cautious — different fibers stretch, shrink, and wash differently. For best results, match fiber content (e.g., two acrylics or two cottons).

What hook size should I use? Generally 1-2 sizes larger than the original yarn requires. Always swatch and check gauge before committing to a project.

Will the strands tangle? They can, especially if you let the yarn balls roll around freely. Using a yarn bowl, separate baskets, or putting each ball in a ziplock bag with a hole punched in the corner all help.

More Crochet & Knit Tutorials You’ll Love

• Textured Crochet Stitches Round-Up — Puff, Bobble & Popcorn
• How to Crochet the Bobble Stitch — Step by Step for Beginners
• Honeycomb Knit Throw — Chunky Cable Pattern (Great Use for Bulky Yarn!)
• Rustic Crochet Cable Table Runner (Uses Chunky Yarn)

Save This How to Make Bulky Yarn Tutorial

Want to come back to this how to make bulky yarn tutorial later? Save it to Pinterest so you can find it when you need to double up your yarn — and share it with your crocheting and knitting friends!