Ne to Tex Converter
Convert a cotton count like 30s or 40s into tex, the ISO unit used in standards, lab reports and export specifications.
- Free
- No signup
- Works on your phone
Constants from ASTM D2260 and the exact yard and pound. Checked 9 November 2026.
Your yarn
Unit you have
English cotton count (Ne): 840-yard hanks per pound
Convert to
Tex: grams per 1,000 m
Converted count
30 Ne in Tex
19.68 tex
tex = 590.54 ÷ Ne590.54 ÷ 30 = 19.68
Every unit
- Deniergrams per 9,000 m
- 177.2 denier
- Texgrams per 1,000 m
- 19.68 tex
- Decitex (dtex)grams per 10,000 m
- 196.8 dtex
- English cotton count (Ne)what you entered
- 30 Ne
- Metric count (Nm)km per kg (metres per gram)
- 50.8 Nm
- Worsted count (Nw)560-yard hanks per pound
- 45 Nw
- Yorkshire woollen count (Ny)256-yard skeins per pound
- 98.44 Ny
Higher denier, tex or dtex means a thicker yarn. Higher Ne, Nm, Nw or Ny means a finer one.
Ne to Tex chart
| Ne | Tex | Nm |
|---|---|---|
| 98.42 | 10.16 | |
| 73.82 | 13.55 | |
| 59.05 | 16.93 | |
| 49.21 | 20.32 | |
| 36.91 | 27.09 | |
| 29.53 | 33.87 | |
| 24.61 | 40.64 | |
| 22.71 | 44.03 | |
| 19.68 | 50.8 | |
| 18.45 | 54.19 | |
| 17.37 | 57.57 | |
| 14.76 | 67.73 | |
| 11.81 | 84.67 | |
| 9.842 | 101.6 | |
| 7.382 | 135.5 |
Tap a value in the first column to load it into the converter.
How to use it
Type the count in Ne, for example 30.
Read the Tex on the right, with every other unit listed under it.
Or tap a value in the Ne to Tex chart to load it.
Ne to Tex: when you need it
Indian spinners and cloth markets quote cotton yarn by English count: 20s, 30s, 40s. Lab reports, ISO standards and many export buyers ask for tex. Dividing 590.54 by the count gives it.
590.54 is not a trade rule of thumb. It comes straight from the units: one pound is 453.59237 g and one 840-yard hank is 768.096 m, so 453.59237 ÷ 0.768096 = 590.54. ASTM D2260 lists it as 590.541.
Formula: tex = 590.54 ÷ Ne
tex = 590.54 ÷ Ne. Ne is indirect and tex is direct, so the formula divides and the two move in opposite directions.
Worked example
30 Ne: 590.54 ÷ 30 = 19.68 tex.
More conversions
To go the other way, use the Tex to Ne converter. To see one count in all seven units at once, including worsted and woollen counts, open the yarn count converter. To estimate fabric weight from yarn counts, try the fabric GSM calculator.
Sources: ASTM D2260, Standard Tables of Conversion Factors and Equivalent Yarn Numbers (current edition D2260-24); ISO 1144:2016, the tex system. Checked 9 November 2026.
FAQ
Questions
How do I convert Ne to tex?
Divide 590.54 by the count: tex = 590.54 ÷ Ne. 30s cotton: 590.54 ÷ 30 = 19.68 tex.
What is 40s count in tex?
14.76 tex, or 14.8 tex rounded to one decimal. In dtex that is 147.6.
Where does 590.54 come from?
It is the pound in grams divided by the 840-yard hank in kilometres: 453.59237 ÷ 0.768096 = 590.54. ASTM D2260 gives the same constant, 590.541.
What is 2/30s in tex?
Each 30s ply is 19.68 tex, so the two-ply yarn is about 39.37 tex, a little more once twist takes up length.
Is a higher tex finer or coarser?
Coarser. Tex is direct (grams per 1,000 m) while Ne is indirect, so they move in opposite directions: 10s is 59.05 tex and 80s is 7.382 tex.
Textile ERP
Yarn, grey, job work and finished stock in one system built around your process.
Mind Over Matter builds it for Surat businesses and clients across India. Reply within 24 hours.
Free tools
More free tools
Fabric GSM calculator
Find a fabric's GSM from a weighed sample, or estimate it from ends and picks per inch and yarn counts.
Fabric metre to kg
Convert fabric between metres and kilograms using its GSM and width, and see the weight per metre.
Diamond mm to carat
Convert a diamond's size in millimetres to its approximate carat weight, and back, for round and fancy shapes. Carats to grams and cents too.