Hook Size Conversion Chart
Click any row to see its matching yarn weight. Highlighted rows match the selected yarn weight.
| US Size | Metric (mm) | UK / Canadian | Pairs With |
|---|
Yarn Weight Guide
Click a card to highlight its recommended hook sizes above.
Quick Converter
Type any hook size format and see all equivalents instantly.
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Results will appear here as you type
US vs UK Crochet Terms
The same stitch can have different names depending on the pattern’s origin.
| US Term | UK Term | |
|---|---|---|
| slip stitch (sl st) | ↔ | slip stitch (sl st) |
| chain (ch) | ↔ | chain (ch) |
| single crochet (sc) | ↔ | double crochet (dc) |
| half double crochet (hdc) | ↔ | half treble (htr) |
| double crochet (dc) | ↔ | treble (tr) |
| treble crochet (tr) | ↔ | double treble (dtr) |