Katia Fair Cotton vs YarnArt Jeans

Technical verdict: Katia Fair Cotton vs YarnArt Jeans

Weight category, yardage and value per ball

Katia Fair Cotton and YarnArt Jeans are both Fine (CYC 2) yarns, so on paper they are interchangeable in the same patterns. The weight class only tells half the story, though: the ball band data below shows how much they really differ in thickness, yardage and behaviour once they are on the hook.

YarnArt Jeans is the longer yarn per gram, with 320 m per 100 g against 310 m per 100 g for Katia Fair Cotton, a difference of 3 %. For the same 1,000 m of yarn, the project weighs about 323 g in Katia Fair Cotton and 313 g in YarnArt Jeans. A lower m/100 g figure means a thicker or denser strand, so the heavier yarn will also make a slightly thicker, warmer fabric.

Per ball, Katia Fair Cotton holds 155 m in 50 g and YarnArt Jeans holds 160 m in 50 g. Five balls of Katia Fair Cotton (775 m) are replaced by 5 balls of YarnArt Jeans, and five balls of YarnArt Jeans (800 m) by 6 balls of Katia Fair Cotton. Always convert by length, never by weight or by number of balls.

Drape, fibre and texture

Both yarns share the same fibre family: Katia Fair Cotton is 100 % cotton and YarnArt Jeans is 55 % cotton, 45 % acrylic, so they wash, block and wear in a similar way. Cotton is inelastic and absorbent: stitches look crisp and defined, the fabric holds its shape in amigurumi, bags and dishcloths, but garments can feel heavy and stretch downwards when wet.

With such similar density, Katia Fair Cotton and YarnArt Jeans will give fabrics of comparable weight and drape at the same gauge; any difference in hand will come mainly from the fibre.

They also share the same construction (Plied), so stitch definition and the way the yarn behaves on the hook should feel familiar when you switch.

Hook size and gauge

The ball bands recommend 3 mm for Katia Fair Cotton and 3–3.5 mm for YarnArt Jeans. The ranges overlap at 3 mm, which is the safest hook to start a test swatch for either yarn.

At least one manufacturer does not publish a reference gauge, so work a 12 × 12 cm swatch with your usual hook before comparing sizes.

Verdict: can you swap them?

YarnArt Jeans is a strong substitute for Katia Fair Cotton, with a Match Score of 80 %. Convert by length with the calculator above, work a quick swatch, and most patterns will need no other changes.

YarnArt Jeans gives more meters per ball, so you will usually buy fewer balls.

Whichever you choose, buy all the balls for a project from the same dye lot and keep the ball band for its care instructions.

Full Katia Fair Cotton data sheet → Full YarnArt Jeans data sheet → Calculate yarn for a whole project →