Yarn Weight Substitution Guide

Leitfaden für die Substitution von Garngewichten

Yarn Weight Substitution Guide

Substitute yarns while maintaining proper gauge. Compare CYCA standard weights, see compatibility ratings, needle adjustments, and yardage conversions.

Original Yarn

Original Yarn Weight (CYCA)

Original Gauge (sts / 4")

Original Yardage (yds)

Substitute Yarn

Substitute Yarn Weight (CYCA)

CYCA Standard Weight Reference

Category	WPI	Needle (mm)	Gauge (sts/4")	Yds/100g
0 – Lace	30	1.5–2.25	33–40	~500
1 – Super Fine (Fingering)	22	2.25–3.25	27–32	~400
2 – Fine (Sport)	18	3.25–3.75	23–26	~310
3 – Light (DK)	14	3.75–4.5	21–24	~280
4 – Medium (Worsted)	11	4.5–5.5	16–20	~210
5 – Bulky	8	5.5–8	12–15	~130
6 – Super Bulky	5	8–12	7–11	~80

How to Use This Guide

Select the CYCA weight category of your original (pattern) yarn.
Enter the gauge and yardage from your pattern or swatch.
Select the CYCA weight of your desired substitute yarn.
Click Compare to see compatibility, stitch multiplier, and yardage conversion.
Always swatch with the substitute yarn to verify your actual gauge matches expectations.

Note: Fiber content (wool vs cotton vs acrylic) also affects drape, elasticity, and gauge. A wool DK and a cotton DK may behave very differently at the same CYCA weight.

All calculations are performed locally in your browser. No data is sent to any server. Results are estimates — always swatch with your actual yarn and needles.

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