How the estimate works
It works out the area of your piece and multiplies it by a typical amount of yarn per square inch for that yarn weight, in plain stitches at the usual gauge. Crochet uses about 30% more yarn than knitting, so that is added when you pick Crochet. You get a range, because stitch pattern, hook or needle size and your own tension all change the real number.
For a hat, scarf or blanket it gets you close enough to plan. If a pattern gives a yardage, trust the pattern first. Textured stitches like popcorns or clusters use more.
Not sure what weight your yarn is? See the yarn weight chart.
Questions
How much yarn do I need for a blanket?
It depends on the size and yarn weight. Put the width and length into the calculator. As a rough guide, a 30 x 36 in crochet baby blanket in medium (4) worsted yarn comes out at about 1,070 to 1,370 yards.
Does crochet use more yarn than knitting?
Yes, about 30% more for the same size of fabric, because crochet stitches are thicker.
Why does the calculator give a range?
Your tension, the stitch pattern and the hook or needle size all change how much yarn you use. The range covers normal differences. Buy enough from one dye lot so the colour matches.
Keep count with Crochet Counter
The same calculator is in the app, next to your projects and row counter, and it works offline. The core app is free, has no ads and needs no account. Pro is optional.
