Yarn Yardage Estimator
Estimate how many yards a project needs, from a hat to an adult sweater, adjusted for yarn weight.
This is a planning estimate for an average adult size. Colorwork, cables, and lace all eat more yarn than plain stockinette, and a pattern's own yardage number always wins over this estimate when you have one.
How it works
Each project type has a baseline yardage figure for worsted weight yarn, since worsted is the most common weight beginners start with. Picking a different weight scales that baseline up or down: bulky yarn is thicker and covers ground faster, so it needs less yardage, while fine weights like sport and fingering need more yarn to build the same size fabric because the stitches are smaller and packed tighter.
Worked example: an adult sweater in worsted needs about 1200 yards as a baseline. Switch to fingering weight, with its 1.5 multiplier, and the estimate jumps to 1800 yards, since a fingering-weight sweater has roughly one and a half times as many stitches per inch as the same sweater in worsted. A scarf in bulky, by contrast, drops from its 450-yard worsted baseline to about 338 yards, since bulky yarn's 0.75 multiplier means fewer, bigger stitches cover the same length.
FAQ
Why is this only an estimate and not an exact number?
Yardage depends on more than project type and weight. Your gauge, the stitch pattern, and the finished size you're aiming for all change how much yarn a project actually uses. This tool gives you a reasonable ballpark for planning a yarn shopping trip, not a promise.
Do cables and colorwork really use that much extra yarn?
Yes. Cables pull stitches together, which uses more yarn per inch of fabric than plain stockinette, and stranded colorwork carries two strands across most of the row. Plan for 10 to 20% more yarn than this baseline estimate if your project leans heavily on either technique.
What if the pattern already gives me a yardage number?
Always use the pattern's own number over this estimate. This calculator is meant for planning your own projects or filling in a gap when a pattern doesn't list yardage, not for overriding a designer's tested figure.
Does yarn weight always mean the same thing across brands?
Mostly, but not perfectly. "Worsted" from one brand can knit up slightly thicker or thinner than another brand's worsted. Check the yarn label's recommended gauge to see how closely it matches the weight category you picked here.
For more on yarn weights and choosing the right ball, see yarn weights explained, from lace to bulky, the best yarn for beginners, and how to read a yarn label.