Bulky yarn (CYC 5) covers a range from "bulky" through "super bulky" (CYC 6) and even "jumbo" (CYC 7). When crafters say "bulky blanket" or "chunky hat," they typically mean CYC 5 or 6. The stitch definition is bold and visible, which makes it easy to count stitches and correct mistakes before they compound.
Recommended hook sizes for CYC 5 are 6.5 to 9.0 mm (US K/10.5 to M/N/13). Super bulky (CYC 6) typically uses 9.0 to 15.0 mm hooks. A lap blanket in bulky yarn can be completed in a single weekend, which makes it appealing for crafters who want a finished object quickly. Yardage per 100-gram skein drops significantly: expect 80 to 130 yards, so large projects require many skeins.
Bulky yarn in 100% wool feels luxurious but requires careful washing. Most crafters choose acrylic or wool-acrylic blends for chunky blankets because machine washability matters when the project is a household item. Arm knitting and giant loop yarn use even larger gauges than CYC 7 and are technically outside the standard weight system.
Quick reference
- CYC weight
- 5
- UK name
- Chunky
- Hook range
- 6.5 to 9.0 mm (US K/10.5 to M/N/13)
- Needle range
- 6.0 to 8.0 mm (US 10 to 11)
- Care
- Most acrylic bulky is machine washable cold, tumble dry low. Check label for wool content.
Best for
- Chunky blankets
- Quick hats
- Cowls
- Beginner projects
- Holiday gifts
Not sure which weight to use for your project? Try the free yarn weight converter to find the closest substitute for any yarn in your stash.