Crochet Hook Size Calculator
Find the recommended crochet hook size in mm, US, and UK sizes based on your yarn weight and gauge.
How to Use the Crochet Hook Size Calculator
- Select your yarn weight from the dropdown.
- Enter how many stitches fit in a 4-inch swatch.
- Click Calculate to get hook size in mm, US, and UK.
- Use the mm value as the universal reference.
Cas d'utilisation
- •Choosing the right hook for a new yarn.
- •Converting between US and UK hook sizes.
- •Adjusting hook size for tighter or looser gauge.
- •Teaching beginners about hook selection.
Formule
Base hook size is determined by yarn weight. Adjustment: if gauge stitches > 20, reduce hook by 0.5 mm; if < 14, increase by 0.5 mm.
Questions fréquemment posées
What yarn weight should I choose?
Check your yarn label — it typically shows a weight category (lace, fingering, sport, DK, worsted, bulky) along with a recommended hook or needle size.
What does gauge stitches mean?
Gauge stitches refers to how many stitches fit in a 4-inch (10 cm) swatch. Higher numbers mean tighter work; lower numbers mean looser work.
Are US and UK hook sizes the same?
No. US and UK crochet hook labeling systems differ significantly. Always verify with the millimeter size, which is universal.