Thread Size Converter
Tex, denier, Nm, ticket.
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About Thread Size Converter
Convert sewing and industrial thread sizes between Tex, denier, dtex, metric count (Nm), cotton count (Ne), ticket number and embroidery weight. Enter a value in any system and see the equivalent everywhere at once.
Some of these systems run backwards — a higher number means a finer thread — which is exactly where a naive converter goes wrong, so each is labelled clearly. It is completely free with no sign-up, and it runs entirely in your browser.
Frequently asked questions
- How do I convert Tex to denier?
- Multiply Tex by 9 (denier = grams per 9,000 m; Tex = grams per 1,000 m). So Tex 30 is denier 270. The tool shows every system at once.
- What does 40wt embroidery thread mean?
- It's a fixed-weight number, so a higher weight is a finer thread — 40wt is roughly Tex 25 / Nm 40, and 60wt is finer still. The weight number is nominal and varies a little by brand.
- What is a thread ticket number?
- Ticket is a commercial size roughly equal to the metric count times three, so it also runs backwards (a higher ticket = a finer thread). Cotton ticket is calculated differently from metric ticket.
- Which thread systems run backwards?
- Tex, denier and dtex get bigger as the thread gets thicker. Metric count (Nm), cotton count (Ne), ticket and embroidery weight get bigger as the thread gets finer — the tool flags which is which.
- What's the difference between Nm and Ne?
- Both are 'count' systems where a higher number is finer, but Nm is the metric count (length per gram in a general sense) and Ne is the cotton count, based on 840-yard hanks, so they give different numbers for the same thread.