What is yarn project calculator?
A yarn calculator gives a starting yardage estimate when you are choosing yarn for common projects. It is not a pattern replacement, but it helps compare skeins and avoid underbuying.
How to use this calculator
- Choose project type.
- Select yarn weight.
- Pick an approximate size.
- Compare the buy-with-margin yardage with skein labels.
How is it calculated?
Formula
estimated yards = base project yardage x yarn weight factor x size factor What The Constants Mean
- Sweater base yardage (1100): Starter estimate for a medium adult sweater in a basic fabric.
- Worsted yarn factor (1): Baseline yarn weight for the simplified project table.
- M size factor (1): Baseline medium project size used before scaling up or down.
- Skein yardage estimate (220): Assumes a common 220-yard skein for rough shopping estimates.
- 15% extra (1.15): A more generous planning buffer for cord, dye, yarn, or thread where leftovers are easier than running short.
A medium worsted sweater estimate starts around 1,100 yd, then adds a margin for swatching and variation.
Common mistakes
Stitch pattern, gauge, fiber, drape, and size all affect yardage. Cables and dense crochet usually need more yarn than simple stockinette. Buy enough of the same dye lot when possible.
FAQ
How much extra yarn should I buy?
A 10% to 15% margin is common, especially when substituting yarn.
Does crochet use more yarn than knitting?
Often yes for comparable fabric, depending on stitch pattern.
What is a dye lot?
A dye lot identifies yarn dyed together; mixed lots can show color differences.
Is this exact for sweaters?
No. Sweaters need pattern-specific yardage for size, gauge, and construction.