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How much yarn do I need?

Quick yardage estimates for common projects in four yarn weights, and how to adjust them for crochet, cables and size.

Updated October 2026 · The Yarn Math

How these numbers work

The amount of yarn depends on the area of fabric and on how dense the stitches are. Finer yarn makes smaller stitches, so you need more length to cover the same area. The tables below are for plain knitting (stockinette or garter) and match the yarn calculator.

Yarn calculator: yards, metres and skeinsOpen the calculator

Accessories and blankets

ProjectFingering (yd)DK (yd)Worsted (yd)Bulky (yd)
Adult hat250190150110
Adult mittens (pair)210160130100
Cowl (24×10 in)310240190140
Scarf (7×60 in)550420340250
Baby blanket (30×36 in)1,4201,080860650
Throw (50×60 in)3,9303,0002,4001,800
Twin blanket (66×90 in)7,7905,9404,7503,560

Adult socks in fingering weight need about 450 yards for a pair.

Sweaters (pullover, plain stitches)

SizeFingering (yd)DK (yd)Worsted (yd)Bulky (yd)
XS (32 in chest)1,4101,070860640
S (36 in chest)1,6201,230990740
M (40 in chest)1,8901,4501,160870
L (44 in chest)2,1301,6301,300980
XL (48 in chest)2,4001,8301,4601,100
2X (52 in chest)2,6202,0001,6001,200
3X (56 in chest)2,8702,1901,7501,310

A cardigan with button bands needs about 10% more. Oversized or long styles need more again; the chest size listed is the finished garment size.

Adjusting for your project

From yards to skeins

Look at the label: it gives the length per ball or skein. Divide the yardage you need by that length and round up. For example, 1,200 yards of a yarn with 220 yards per skein is 5.5, so buy 6 skeins (7 with the 10% margin).

Yarn calculator: yards, metres and skeinsOpen the calculator

Questions

How much yarn do I need for a blanket?

For a 50×60 in throw in worsted, plan on about 2,400 yards in plain knitting. A baby blanket (30×36 in) needs about 860 yards.

How many skeins for a sweater?

Divide the yardage by the length on the label and round up. A medium worsted pullover needs about 1,150 yards, or 6 skeins of 200 yards.

Is the pattern yardage more accurate?

Yes. Pattern yardage comes from the actual design, so use it when you have it. These estimates are for planning, stash checks and designing your own pieces.

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