Yes — and by a predictable amount. For the same size fabric in a comparable stitch, crochet consumes roughly 25–30% more yarn than knitting. If you buy for a crochet project using knitting numbers, you will run short.
Why the difference exists
Knit stockinette is built from flat, interlocking V-shaped loops. Crochet stitches are taller, knotted structures with more yarn wrapped into every stitch — that structure is what gives crochet fabric its body, and it costs yardage.
The 25–30% rule in practice
| Project (worsted, W4) | Knit | Crochet | Extra skeins (220 yd) |
|---|---|---|---|
| Baby blanket 30"×36" | 1,000 yds | ~1,250 yds | +2 |
| Medium sweater | 1,600 yds | ~2,000 yds | +2 |
| Throw 50"×60" | 2,700 yds | ~3,400 yds | +4 |
When the rule bends
Openwork and lace crochet can use less yarn than the rule suggests; dense texture stitches (waffle, bobbles, cables) can use far more — sometimes double. When your pattern states its own yardage, always prefer that number over any rule of thumb.
SkeinSense applies the crochet multiplier automatically when you switch craft — and shows the adjustment as a line item in its "why this number" breakdown, so nothing is hidden.
Get craft-aware skein counts — free in SkeinSense →