Crochet size and conversion charts
The crochet charts collect the reference numbers crocheters look up most: standard blanket dimensions, hat circumference and height by age, hook size conversions, yarn weight categories, US and UK term equivalents, and chart symbols. The yardage tables are computed estimates, and each chart states the method or source behind its figures.
By the crochetpatterns.io editorial team · Reviewed · Editorial policy

Reference
Crochet Blanket Sizes
Standard crochet blanket sizes range from a 10 × 10 inch lovey to a 108 × 100 inch king.
Reference
Crochet Hat Sizes
Crochet hat sizes are based on head circumference and hat height.
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Crochet Baby Sizes
Crochet baby garment sizes use chest circumference and body lengths.
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Crochet Scarf Sizes
Crochet scarf sizes depend on the wearer.
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Crochet Sock Sizes
Crochet sock sizes are based on foot circumference and foot length.
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Crochet Hook Size Conversion Chart
A crochet hook size conversion chart matches metric millimeter sizes to US letter-number sizes and old UK numbers.
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Yarn Weight Conversion Chart
A yarn weight conversion chart translates yarn names between countries using the Craft Yarn Council 0–7 system.
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US vs UK Crochet Terms Chart
US and UK crochet terms use the same names for different stitches.
Reference
Crochet Symbol Chart
A crochet symbol chart shows each stitch as a standard symbol.
Original data
Crochet Blanket Yardage Chart
A 50 × 60 inch crochet throw needs an estimated 2,550 yards of medium worsted yarn, 1,650 yards of bulky yarn or 900 yards of super bulky yarn.
Original data
Granny Square Blanket Size Chart
A 50 × 60 inch granny square throw needs 90 squares at 6 inches, 56 squares at 8 inches, or 25 squares at 12 inches.
What are standard crochet blanket sizes?
Standard crochet blanket sizes range from a 10 × 10 inch lovey to a 108 × 90 inch king. A throw is usually about 50 × 60 inches and a baby blanket about 30 × 35 to 36 × 36 inches.
The blanket size chart lists every standard size in inches and centimetres, and the yardage chart estimates yarn needed at each size.
How do you use crochet size charts?
Use a size chart to set the finished dimensions before you calculate stitches. Blanket charts give standard sizes from lovey to king; hat charts give head circumference and hat height by age, and most crocheted hats are made slightly smaller than the head so they stretch to fit; baby, scarf and sock charts work the same way. Measure the person where possible and use the chart as a check.
Conversion charts translate hook sizes between metric, US and old UK systems, map yarn weight names used in different countries, and pair US and UK stitch terms. The yardage and granny-square charts are calculated estimates — each states its method — so add a margin when you buy yarn.
Frequently asked questions
Can I print the crochet charts?
Yes. Every chart page prints cleanly on A4 or US Letter paper using your browser's print option.

