StitchTip calculator
Yarn held together calculator
Combine two yarns from the length and net weight printed on each label, then compare their exact combined linear density and equivalent put-up.
How this tool works
Each label is converted to tex, the grams per 1,000 metres. Linear densities add when strands are held together; the combined tex is then converted back to metres and yards per standard weight.
Example calculation
A 400 m / 100 g yarn is 250 tex and a 500 m / 150 g yarn is 300 tex. Together they are 550 tex, equivalent to about 181.8 m per 100 g.
Frequently asked questions
Does the result give an exact yarn weight category?
No. Fibres, ply and loft can produce different diameters at the same linear density. Measure the combined strands with WPI and make a gauge swatch.
Can the label sizes be different?
Yes. Enter each yarn’s own printed length and net weight; the calculation normalizes them before adding.
Does this predict project gauge?
No. It compares linear density. Hook or needle size, stitch pattern and tension still determine the worked gauge.