Yarn Weight Converter
Convert between UK, US and Australian yarn weight names with recommended needle sizes, hook sizes, wraps per inch and typical gauge for each weight.
Select Yarn Weight
Wraps Per Inch
32+
Needle Size
1-3 mm (US 000-1)
Hook Size
1-2 mm
Typical Gauge
32+ stitches per 10cm
Lace
Extremely fine, delicate lace weight yarn
Wraps Per Inch (WPI)
The number of times a yarn wraps around a ruler in one inch. Higher WPI means finer yarn. Use this as a quick reference if you don't have official specs.
Needle & Hook Sizes
These are starting recommendations. Always check your pattern and knit a gauge swatch to find the right size for your project.
Gauge
The number of stitches and rows per 10cm. Lighter yarns create more stitches in the same space, heavier yarns create fewer.
Quick Reference Table
| Weight | WPI | Gauge (per 10cm) | Needle (mm) |
|---|---|---|---|
| Lace | 32+ | 32+ stitches per 10cm | 1-3 |
| Fingering / Superwash | 28-32 | 28-32 stitches per 10cm | 2-3 |
| Fine / Sport | 22-26 | 22-26 stitches per 10cm | 3-4 |
| Light / DK (Double Knit) | 18-22 | 18-22 stitches per 10cm | 3.75-4.5 |
| Medium / Worsted | 16-20 | 16-20 stitches per 10cm | 4.5-5.5 |
| Bulky / Chunky | 12-16 | 12-16 stitches per 10cm | 5.5-8 |
| Super Bulky | 6-12 | 6-12 stitches per 10cm | 8-12.75 |
About Yarn Weights
Yarn weight determines how thick the yarn is and how many stitches you'll knit per 10cm. Heavier yarns create quick projects, while lighter yarns are perfect for intricate stitch patterns and fitted garments. Always check your pattern for specific gauge and needle size recommendations.
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