yarn is a long continuous length of interlocked fibres, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery, and ropemaking.
l/m = 1693 × lm/nec × m/kg, where l/m is the yarn length in meters, lm/nec is the English cotton count and m/kg is the yarn weight in kilograms.
English cotton count (Nec) is an indirect counting system, that is, the higher the number the finer the yarn.
To convert denier to cotton count: lm/nec = 5315/ρ/den, where lm/nec is the cotton count and ρ/den is the density in denier.
To convert tex to cotton count: lm/nec = 590.5/ρ/tex, where lm/nec is the cotton count and ρ/tex is the density in tex.
Below is another look at the formulas above that we saved into a different format because we are having difficulty typing to show division line.
Have you ever asked yourself, what is a hank of cotton or silk? You can read the hank definition if you are curious.
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