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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.
| Blanket | Inches | Centimetres | Yarn, estimate |
|---|---|---|---|
| Lovey | 12 × 12 in | 30 × 30 cm | 50–72 yd |
| Baby | 36 × 36 in | 91 × 91 cm | 454–648 yd |
| Crib | 36 × 45 in | 91 × 114 cm | 567–810 yd |
| Throw | 50 × 60 in | 127 × 152 cm | 1,050–1,500 yd |
| Twin | 66 × 90 in | 168 × 229 cm | 2,079–2,970 yd |
| Full / double | 80 × 90 in | 203 × 229 cm | 2,520–3,600 yd |
| Queen | 90 × 100 in | 229 × 254 cm | 3,150–4,500 yd |
| King | 108 × 100 in | 274 × 254 cm | 3,780–5,400 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.
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.
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.
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.
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.
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.
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.
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