When you’re creating amigurumi, yarn weight matters more than almost any other project type. It affects your stitch definition, the tightness of your fabric, how well your plushie holds its shape, and even how easy it is to embroider details. That’s where the Standard Yarn Symbol Chart becomes an essential tool in your toolkit.
Whether you’re just starting out or designing your own patterns, understanding yarn weight categories and symbols will help you achieve consistent results and choose substitutes with confidence.
And if you want a handy visual reference?
Download your free printable Standard Yarn Symbol Chart HERE.
The Standard Yarn Symbol Chart (often used by the Craft Yarn Council) categorises yarn into numbered groups based on thickness. Each category has a number, a name, and a standard symbol, making it easy to identify the weight of a yarn at a glance.
For amigurumi makers, this chart is especially helpful for:
Yarn weight directly impacts:
✔ Fabric Tightness
Amigurumi should have a dense, hole-free fabric. Using a lighter yarn with a smaller hook helps achieve that perfect “X-stitch” (yarn under) texture many plushie makers love.
✔ Final Size
Want a tiny keychain version? Choose Fine or Light yarn.
Want a giant cuddle companion? Switch to Bulky or Super Bulky.
✔ Shape & Definition
Rounded features, neat limbs, and clean edges all rely on yarn + hook combos that create the right tension.
✔ Ease of Embroidery
Finer yarns give smoother eye and mouth embroidery, while thicker yarns require chunkier embellishments for balance.
Here’s a quick overview of the most common yarn weights and how they behave in plushie projects:
Very thin, not typically used for amigurumi unless creating micro plushies – which requires good eyesight or a strong lamp!
Great for small and detailed amigurumi, mini keychains, and detailed work.
A favourite for small to medium plushies with great stitch definition.
One of the most popular choices. Ideal balance of stitch clarity, ease of use, and fabric density.
Perfect for standard-sized amigurumi (10–25 cm). Easy to work with and widely available.
Excellent for chunky, huggable plushies. Works up fast and creates soft textures.
Best for oversized amigurumi, plush pillows, or jumbo-style toys.
Ideal for mega plushies, though shaping can be more challenging.
Most yarn labels include recommended hook and needle sizes – but amigurumi breaks the rules intentionally.
Use a hook 1–2 sizes smaller
This creates a dense, hole-free fabric that holds stuffing securely.
For example:
When a specific yarn is unavailable or discontinued, follow these steps:
Keep a copy in your project bag or beside your crafting desk.
Download the printable yarn weight chart HERE.
It includes:
Perfect for helping you scale patterns or choose yarn for new designs!
Understanding yarn weight is one of the easiest ways to improve the quality of your amigurumi. With the Standard Yarn Symbol Chart at your fingertips, you’ll be able to:
Whether you’re designing your own patterns or following someone else’s, this knowledge makes every project more enjoyable.
Happy crocheting – and don’t forget to grab your free printable chart!
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Hello friends! I’m Alanna, the creative mind behind Theodore And Rose and lover of all things vintage. I design modern amigurumi patterns with a timeless, heirloom charm.
