The Yarn StudioGUIDE · PROJECT YARN PICKS
Best yarn for blankets
Blankets get sat on, spilled on, and washed constantly — and they are big, so cost and skein availability matter as much as fibre. The best blanket yarns are washable, soft, and available in enough of one dye lot to finish the job.
Short answer
For most blankets, use a soft washable acrylic, cotton, or superwash wool blend in worsted, aran, or bulky weight. Washability and dye-lot availability matter more here than luxury fibre.
Best weights: Worsted (4), Aran (4) and Bulky (5); DK (3) for heirloom baby blankets.
Best yarns and fibres
Match the weight category on the ball band first, then compare fibre behaviour. Every option below works — the right one depends on how the finished piece will be worn, washed, and stored.
Soft premium acrylic
Worsted to BulkyWhy it works: Machine washable and dryable, affordable at blanket scale, and available in huge dye lots.
Watch out: Cheap acrylic feels squeaky and pills. Squeeze a ball before buying twenty of them.
Cotton
DK to WorstedWhy it works: Breathable, hard-wearing, and perfect for summer throws and baby blankets.
Watch out: Heavy in a large blanket and hard on the hands over long sessions.
Superwash merino
DK to AranWhy it works: Warm, soft, and washable — the luxury choice for heirloom baby blankets.
Watch out: Expensive at scale, and superwash fabric grows with washing, so expect a larger finished blanket.
Acrylic / wool blend
Worsted to BulkyWhy it works: Warmth and bounce from the wool, easy care and price from the acrylic.
Watch out: Check whether the wool content is superwash before you machine wash.
Chenille / velvet yarn
BulkyWhy it works: Plush and quick for baby and toddler blankets that get cuddled hard.
Watch out: Prone to worming — use a tight gauge and a smaller hook or needle than the band suggests.
Bamboo / cotton blend
Sport to DKWhy it works: Cool, silky, and drapey for lightweight summer throws.
Watch out: Grows on blocking and is heavy when wet; dry flat.
How much yarn you need
Approximate worsted-weight yardage by blanket size, worked in a plain stitch. Crochet uses noticeably more yarn than knitting for the same area — add roughly 25% to these figures for dense crochet stitches.
| Size | Yards | Metres |
|---|---|---|
| Pram / lovey (18 × 18 in) | 300–450 yd | 275–410 m |
| Baby (30 × 36 in) | 800–1,200 yd | 730–1,100 m |
| Lap throw (40 × 50 in) | 1,300–1,800 yd | 1,190–1,645 m |
| Twin (66 × 90 in) | 3,000–4,000 yd | 2,745–3,660 m |
| Queen (90 × 100 in) | 4,500–6,000 yd | 4,115–5,485 m |
These are planning estimates, not a substitute for the yardage printed in your pattern. Always compare total yardage rather than skein counts when you swap yarn.
Before you cast on
- Confirm the dye lot on every skein — a shade shift halfway down a blanket is very visible.
- Match the fibre to the recipient: washable and non-scratchy for babies, hard-wearing for a sofa throw.
- Weigh a finished square to project total yardage before you commit to the full size.
- Choose a stitch pattern you can do without concentrating — blankets are long projects.
What to avoid
- Hand-wash-only yarn for anything used by children or pets.
- Loosely spun single-ply yarn for a blanket that will be sat on — it felts and pills quickly.
- Buying skein by skein as you go; dye lots sell out long before you finish.
Substituting from your stash
You may already own something that works. The Yarn Studio matches yarns by tension, weight category, and fibre family, and flags the ones sitting in your own stash — including whether you have enough yardage for the pattern.
- Not sure what a mystery ball is? Identify it from thickness, ply and a photo.
- Need to hit a pattern gauge? Use the gauge calculator to find weights that match.
- Swapping a discontinued yarn? Read how to substitute yarn in any pattern.
FAQ
What is the best yarn for a baby blanket?
A soft, machine-washable yarn: premium acrylic, cotton, or superwash merino in DK to worsted weight. Avoid anything scratchy, loosely spun, or with long fibres that could shed.
How much yarn do I need for a throw blanket?
A 40 × 50 inch lap throw takes roughly 1,300–1,800 yards (1,190–1,645 m) of worsted-weight yarn when knitted. Dense crochet stitches such as single crochet can push that 25% higher.
Is acrylic or cotton better for blankets?
Acrylic is lighter, warmer, cheaper, and machine dryable, which suits everyday throws and kids' blankets. Cotton is cooler and more breathable, which suits summer throws and warm climates, but it is heavier and more expensive at blanket scale.
Does crochet use more yarn than knitting for a blanket?
Yes — dense crochet stitches typically use 20–30% more yarn than knitting for the same area. Open stitch patterns such as granny squares and mesh close that gap considerably.
Best yarn for other projects
- Best yarn for sweatersFor most sweaters, choose a springy wool or wool blend in DK, worsted or aran weight. Wool holds shape at the shoulders, blocks beautifully, and needs the fewest stitches per row for a garment you will finish.
- Best yarn for cardigansPick a plied wool or wool blend in DK to aran weight. Plied yarns keep button bands crisp and stop the fronts from drooping — the two things that make or break a cardigan.
- Best yarn for baby blanketsUse a soft, machine-washable yarn in DK or worsted weight: premium acrylic, cotton, or superwash merino. Choose a tightly spun, non-shedding yarn and a firm stitch pattern with no large holes.
- Best yarn for scarvesChoose the softest fibre you can afford: merino, alpaca, or a merino/silk blend in fingering to worsted weight. Nothing that scratches, whatever the price tag says.
- Best yarn for amigurumiUse a smooth, plied cotton or cotton blend in sport to worsted weight, worked on a hook one to two sizes smaller than the ball band suggests. Cotton gives sharp stitch definition and holds shape when stuffed.
Shop your stash first
Search by tension, weight and fibre — and see which matches you already own.
Open the substitute finderKeep going
Related guides
- Baby blanketsBest yarn for baby blanketsThe safest, softest washable yarns for a baby blanket, safety guidance, and yardage by blanket size.
- Project Yarn PicksBest yarn for every projectWhich yarn to use for sweaters, cardigans, blankets, scarves and amigurumi — fibres, weights, yardage and pitfalls.
- CalculatorYarn weight & gauge calculatorEstimate gauge from a yarn weight and needle size, convert a swatch to stitches per 10 cm, or enter a pattern gauge and find yarns that match.