The yarn you choose makes or breaks an amigurumi. Pick well and your stitches stay crisp, your shapes hold firm and the stuffing stays hidden; pick wrong and even a great pattern looks lumpy. Here's how to choose the best yarn for amigurumi — starting with the great cotton-versus-acrylic question.
Why yarn choice matters so much for amigurumi
Amigurumi is worked in tight rounds of single crochet, and the toy is stuffed firmly. That means two things really matter: stitch definition (so the design reads clearly) and a dense fabric (so the polyester filling never peeks through). The fibre and weight of your yarn directly control both. Get them right and even a beginner's toy looks polished.
Cotton yarn for amigurumi
Cotton is the favourite of makers who love crisp, professional-looking results. Because it has little stretch and a firm twist, every stitch stands out sharply and the finished toy holds its shape beautifully — ideal for collector pieces and detailed faces.
Pros: sharp stitch definition, firm structure, holds shape, no fuzz. Cons: less stretchy (can be harder on the hands), usually pricier, slightly less cuddly.
Acrylic yarn for amigurumi
Acrylic is the most popular all-rounder, especially for beginners and children's toys. It's soft, springy, widely available and very affordable, so it's forgiving to learn on and easy to replace.
Pros: soft and cuddly, budget-friendly, huge colour range, machine washable. Cons: slightly softer stitch definition, can pill over time, a little "squeaky" on metal hooks.
Cotton vs acrylic: side-by-side
| Cotton | Acrylic | |
|---|---|---|
| Stitch definition | Crisp and sharp | Soft, slightly rounded |
| Feel | Firm, structured | Soft, squishy, cuddly |
| Holds shape | Excellent | Good |
| Budget | Pricier | Very affordable |
| Best for | Detailed, display pieces | Kids' toys, beginners, big projects |
| Care | Usually machine washable | Machine washable |
Other yarns you can use
Cotton and acrylic aren't your only options. A cotton-acrylic blend gives you crisp stitches with a little softness — arguably the best of both for amigurumi. Chenille or velvet yarn makes irresistibly plush, cuddly toys, but it's slippery and hides your stitches, so it's tricky for beginners. Wool is lovely and elastic but often needs hand-washing — less practical for children's toys. For a full breakdown of every fibre, see our yarn & hook size guide.
What weight and hook size for amigurumi?
Most amigurumi uses DK (CYC 3) or worsted/aran (CYC 4) weight yarn — easy to handle and widely available. The golden rule: use a hook one to two sizes smaller than the yarn label recommends, usually in the 2.5–4.0 mm range. The smaller hook creates tight, dense stitches so the stuffing stays hidden. Want to know exactly how much to buy? Try our crochet yarn calculator.
Best yarn by project
- Detailed display figures — cotton or a cotton-acrylic blend in DK weight.
- Soft toys for babies and toddlers — soft, washable acrylic in worsted weight.
- Beginner's first amigurumi — a smooth, light-coloured acrylic so stitches are easy to see.
- Extra-plush cuddlies — chenille/velvet, once your tension is steady.
Ready to put it into practice?
Every design in our amigurumi collection lists the ideal yarn weight and hook size, so you can shop with zero guesswork — and our free patterns are a perfect way to test your yarn choice risk-free.
Shop amigurumi patterns →Frequently asked questions
Is cotton or acrylic better for amigurumi?
Cotton gives crisper stitch definition and a firmer, display-worthy finish; acrylic is softer, cheaper and more beginner-friendly. Both work well — choose based on the look and feel you want.
What weight of yarn is best for amigurumi?
DK (CYC 3) or worsted/aran (CYC 4) weight is best for most amigurumi — easy to handle and widely available.
What hook size should I use for amigurumi?
Use a hook one to two sizes smaller than the yarn label suggests, usually 2.5–4.0 mm, so the tight stitches hide the stuffing.
How do I stop stuffing showing through my amigurumi?
Use a smaller hook for a denser fabric and stuff firmly but evenly. If gaps still show, go down one more hook size.
Is acrylic yarn safe for baby toys?
Yes — soft, washable acrylic is a popular, practical choice for baby and toddler toys. Always embroider faces or use securely-attached safety eyes for very young children.
Whichever you choose, the best yarn is one you enjoy working with. Start with an affordable acrylic to learn, then experiment with cotton and blends as your confidence grows. New to it all? Our crochet skill level guide helps you pick a first project you'll love to finish.
