A free tool by HavenKept
Yarn Calculator
Pick your project and yarn weight, see the yards and skeins you need.
Free, no signup, and it saves right in your browser.
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2,520
Yards Needed
12
Skeins to Buy
2,304
Meters

Buy all your skeins in the same dye lot, colors shift noticeably between lots, and mid-project is a bad time to find out.

Compatible with all devicesNot a printable or PDF. It's browser-based, no app to download and works on any device. Even offline.
It does the mathNo gauge-chart spelunking. Pick a project, size and yarn weight, and the yardage updates instantly, margin included.
It remembersYour project settings save in your browser. Close the tab, come back at the yarn store, and your numbers are still here.
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Another little gift

Yarn substitution cheat sheet

A free printable guide to swapping yarns without ruining your gauge, yours whether or not you leave an email.

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Good to know

Common questions

How much yarn for a baby blanket?

A 30 × 40 inch baby blanket in worsted weight single crochet needs roughly 900-1,000 yards, about 4-5 standard skeins. Open stitches like granny squares use noticeably less; dense stitches use more.

How much yarn for a throw blanket?

A 50 × 60 inch throw in worsted weight comes in around 2,200-2,500 yards, or 10-12 skeins. In chunky yarn the yardage drops but the skeins are usually shorter, so the count stays similar.

Does crochet use more yarn than knitting?

Generally yes, crochet stitches wrap more yarn per stitch. As a rule of thumb crochet uses 20-30% more yarn than knitting for the same size piece, which this calculator accounts for in the stitch selector.

Why does the calculator add a margin?

Because gauge is personal. Tension, hook size and how you hold the yarn all shift the total, and running short at the last row is the worst outcome. The recommended 12% covers most of that variation.

Is this exact?

No calculator can be, it's a solid estimate based on project area, yarn weight and stitch type. Always make a gauge swatch if the project matters, and buy a spare skein in the same dye lot.

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