How much yarn for a blanket?

Blankets eat yarn. Even a small baby blanket uses more yardage than most garments, and a full-size throw can push past 2,500 yards of worsted weight. Running out partway through (especially with a discontinued dye lot) is the specific kind of knitting misery that’s entirely preventable with decent planning.

The estimates below give a starting range. Your actual yardage depends on gauge, stitch pattern, and dimensions, but these numbers get you close enough to buy with confidence.

Yardage estimates by blanket size

These ranges assume stockinette or a similar flat stitch pattern. Textured patterns use more (adjustments below).

Baby blanket (30 x 40 inches / 75 x 100 cm) Worsted: 765–985 yards DK: 985–1,200 yards Bulky: 545–710 yards

Lap blanket / small throw (40 x 50 inches / 100 x 130 cm) Worsted: 1,310–1,640 yards DK: 1,640–1,970 yards Bulky: 875–1,200 yards

Full throw (50 x 70 inches / 130 x 180 cm) Worsted: 2,185–2,735 yards DK: 2,735–3,280 yards Bulky: 1,530–1,970 yards

Large / king-size (70 x 90 inches / 180 x 230 cm) Worsted: 3,825–4,920 yards DK: 4,920–6,015 yards Bulky: 2,735–3,500 yards

For a more precise estimate based on your specific yarn and dimensions, the Yarn Estimator covers blankets from baby to king size across all standard yarn weights.

Why yarn weight changes the total so much

Thinner yarn means more stitches per inch, which means more yarn consumed per row. A DK weight blanket has roughly 25% more stitches across the same width compared to worsted, and proportionally more rows to reach the same length. Same size blanket, significantly more yarn inside it.

This is partly why super bulky blankets are popular with newer knitters. Fast to knit, fewer total yards needed. The catch: super bulky yarn tends to cost more per 100 g and gives fewer yards per skein, so the total project cost often comes out similar despite the lower yardage.

Stitch pattern adjustments

The estimates above assume flat fabric. Adjust upward for:

Cables: Add 15–20%. Cables compress the fabric horizontally, so you need more stitches to achieve the same blanket width. A heavily cabled Aran blanket can use 25% more than the same dimensions in stockinette.

Seed stitch and moss stitch: Add 5–10%. The alternating knit-purl pattern creates denser fabric.

Stranded colorwork: Add 20–30%. Floats on the back consume yarn that doesn’t contribute to fabric width. Fair Isle blankets are beautiful but yarn-hungry.

Garter stitch: Roughly the same total yardage as stockinette. The blanket will be slightly thicker and narrower at the same stitch count. Garter compresses differently.

Lace: May use slightly less than stockinette because the open stitch structure stretches further when blocked. A lace blanket blocked aggressively can reach a larger finished size from the same yardage.

Converting yardage to skeins

Check the yarn label for yards per skein. Divide total yardage by per-skein yardage. Round up.

Your blanket needs about 2,200 yards. The yarn gives 220 yards per 100 g skein. That’s 10 skeins. Buy 11. The extra accounts for gauge variation, cast-on tails, any frogging, and the reality that yarn estimation is a range, not a promise.

Always buy an extra skein or two for blankets. The cost is trivial compared to running short three-quarters of the way through when the dye lot is gone. The yarn estimation guide covers the weighing method for checking partial skeins mid-project.

Dye lot planning

Blankets need enough skeins that dye lot consistency becomes a real concern. Yarn dyed in different batches can look noticeably different once knit side by side, even when the skeins look identical in the store.

Buy all the yarn at once, from the same dye lot. Check the dye lot number on each label. If the shop doesn’t have enough from one lot, ask whether they can order more from the same batch.

If you end up with two dye lots despite best efforts, alternate skeins throughout the blanket. Two rows from lot A, two rows from lot B, repeat. The color difference blends so gradually it becomes invisible. Much better than using all of one lot first and hitting a visible line where the second starts.

Choosing yarn weight for a blanket

Bulky and super bulky: Fast, chunky texture, warm. Good for throws meant to be cozy rather than refined. The fabric is heavy, which is either a feature (weighted-blanket effect) or a drawback (hard to drape over a couch arm).

Worsted: The most common blanket weight. Good balance of speed, density, and drape. A worsted blanket is warm without being stiff. Works for most stitch patterns.

DK: Finer texture, lighter weight, more drape. Takes longer but produces a blanket that feels more polished. Good for baby blankets where you want softness without bulk.

Sport and fingering: Beautiful fabric. A serious time commitment. A fingering-weight blanket is a project measured in months. The result is lightweight and drapey, more like a woven blanket than a typical knitted throw.

FAQ

Can I use leftover yarn for a blanket? Scrappy blankets are a great stash-busting project. The rule: keep all the yarns in the same weight category. Mixing weights creates uneven tension and sections that pull differently after blocking. Same weight, mixed colors, works well.

Is it cheaper to knit a blanket or buy one? A hand-knit blanket almost always costs more in materials than a machine-made one. The value is in the process, the customization, and the quality. If budget is the main concern, acrylic in worsted or bulky keeps material costs reasonable.

How long does it take to knit a blanket? A super bulky throw might take 20–30 hours. Worsted weight, 60–100 hours. Fingering weight can exceed 200. Speed, stitch pattern complexity, and how many hours per week you knit all push those numbers around.

Should I knit a blanket flat or in the round? Most blankets are knit flat on long circular needles (used back and forth, not joined). Some modular designs (squares, hexagons) are knit individually and joined. Circular construction works for round blankets but is uncommon for rectangular throws.