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Free tools · calculator

Blanket size calculator (crochet and knit)

Standard blanket sizes are about 12 × 12 in for a lovey, 36 × 36 in for a baby blanket, 50 × 60 in for a throw, 66 × 90 in twin, 80 × 90 in full, 90 × 100 in queen and 108 × 100 in king. To find your starting chain, multiply the width by your stitches per inch: a 50 in throw at 12.5 sc per 4 in is 156 stitches, so chain 157. In worsted yarn and single crochet that throw takes an estimated 1,500–2,100 yards.

Gauge is filled in with a typical value for the yarn weight. Measure your own swatch and type it in.

StartChain 157, then sc in 2nd ch from hook and in each ch across: 156 stitches
Finished size
50 × 60 in (127 × 152 cm)
Stitches across
156
Rows
218
Yarn (estimate)
1,500–2,100 yd (1,372–1,920 m)
Skeins to buy
12 of 200 yd (high estimate + 10%)

Standard blanket sizes and yarn (worsted, half double crochet)

BlanketInchesCentimetresYarn, estimate
Lovey12 × 12 in30 × 30 cm50–72 yd
Baby36 × 36 in91 × 91 cm454–648 yd
Crib36 × 45 in91 × 114 cm567–810 yd
Throw50 × 60 in127 × 152 cm1,050–1,500 yd
Twin66 × 90 in168 × 229 cm2,079–2,970 yd
Full / double80 × 90 in203 × 229 cm2,520–3,600 yd
Queen90 × 100 in229 × 254 cm3,150–4,500 yd
King108 × 100 in274 × 254 cm3,780–5,400 yd

Sizes: common blanket charts (A Crocheted Simplicity, Oombawka Design). Yarn: area × 0.35–0.5 yd per square inch for worsted half double crochet (CrochetCalc's estimating table). Single crochet uses about 40% more, double crochet about 25% less.

Worked example: a baby blanket

You want a 36 × 36 in baby blanket in worsted yarn and half double crochet, and your swatch is 14 stitches and 10 rows per 4 in.

  1. Stitches across: 36 × 14 ÷ 4 = 126. For hdc, chain 126 + 2 = 128 and start in the 3rd chain from the hook.
  2. Rows: 36 × 10 ÷ 4 = 90.
  3. Yarn: 36 × 36 = 1,296 sq in, × 0.35–0.5 yd = 454–648 yd. In 200 yd skeins, with 10% spare on the high figure: 4 skeins.

Questions

What size is a standard crochet blanket?

Common sizes are a 12 × 12 in lovey, a 36 × 36 in baby blanket, a 50 × 60 in throw, 66 × 90 in for a twin bed, 80 × 90 in full, 90 × 100 in queen and 108 × 100 in king. Bed sizes run larger than the mattress so the blanket drapes over the sides.

How many stitches do I chain for a blanket?

Multiply the width in inches by your stitches per inch (your gauge over 4 in, divided by 4), then add the turning chain: 1 for single crochet, 2 for half double and double crochet. At 12.5 sc per 4 in, a 50 in throw is 156 stitches, so chain 157.

How much yarn do I need for a throw blanket?

A 50 × 60 in throw in worsted (weight 4) yarn takes roughly 1,500–2,100 yards in single crochet, 1,050–1,500 in half double and 750–1,200 in double crochet. Textured stitches use more; buy the high end and keep the receipt.

Why does the calculator give a range?

Yarn use depends on your stitch, tension, hook and fibre, so no single number is right for everyone. The range comes from published yardage-per-area figures for each yarn weight and stitch. For a closer number, weigh a 4 in swatch and scale it by area.

Can I use it for knitting?

Yes. Switch to Knit: you get the cast-on count and rows from your gauge, and the yardage is worked out from your stitch and row gauge with a standard knitting loop-length formula.

Every number here is an estimate worked out in your browser; nothing you type is sent anywhere. Yarn use changes with your stitch pattern, tension and fibre, so swatch first and buy from one dye lot. Check your whole pattern before you start.