Convert Decitex to Yorkshire Woollen Count (dtex to NY)
Decitex and Yorkshire woollen count are inversely related: NY = 19377.13468 ÷ dtex, so 15 dtex = 1291.808979 NY.
Also searched as decitex to NY, decitex in NY, decitex into Yorkshire woollen count, dtex to NY, dtex in Yorkshire woollen count, dtex into Yorkshire woollen count, decitex to Yorkshire woollen count and dtex to Yorkshire woollen count converter.
1 dtex = 19377.13468 NY
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk decitex to woollen count converter to paste a column from Excel.
How to Convert Decitex to Yorkshire Woollen Count
- NY = 19377.13468 ÷ dtex
- dtex = 19377.13468 ÷ NY
- Example: convert 15 dtex to NY: 19377.13468 ÷ 15 = 1291.808979 NY
Formula
NY = 19377.1346819 ÷ dtex
Derivation from SI units:
- 1 dtex = 1 g per 10 000 m = 0.1 tex = 10⁻⁷ kg/m (exact)
- Yorkshire woollen count = number of 256-yard skeins per pound, so tex = 1937.7 ÷ count
- Solving for NY: NY = 19377.1346819 ÷ dtex (a higher dtex means a lower NY)
Both units are defined exactly, so the factor is exact. Decitex definition: decitex; Yorkshire Woollen Count definition: Yorkshire woollen count.
Worked examples
- A reading of 56 dtex converts to 346.0202622 NY.
19377.13468 ÷ 56 = 346.0202622 NY - A value of 235 dtex is 82.45589226 NY.
19377.13468 ÷ 235 = 82.45589226 NY
Decitex to Yorkshire Woollen Count conversion table
| Decitex (dtex) | Yorkshire Woollen Count (NY) |
|---|---|
| 11 dtex | 1761.557698 NY |
| 22 dtex | 880.7788492 NY |
| 33 dtex | 587.1858995 NY |
| 44 dtex | 440.3894246 NY |
| 56 dtex | 346.0202622 NY |
| 78 dtex | 248.4248036 NY |
| 110 dtex | 176.1557698 NY |
| 167 dtex | 116.0307466 NY |
| 235 dtex | 82.45589226 NY |
| 330 dtex | 58.71858995 NY |
| 550 dtex | 35.23115397 NY |
| 1100 dtex | 17.61557698 NY |
Where it's used
Decitex are used for polyester and nylon filament yarns (for example 167 dtex), while Yorkshire woollen count appear in woollen-spun yarns for tweeds and blankets. Both measure yarn count (linear density of yarns and fibres), but one system is the inverse of the other, so a fixed constant is divided by the value.
Decitex to other yarn count units
| Conversion | 1 dtex equals |
|---|---|
| decitex to woollen count | 19377.13468 NY |
| decitex to tex | 0.1 tex |
| decitex to denier | 0.9 den |
| decitex to Ne | 5905.412474 Ne |
| decitex to Nm | 10000 Nm |
| decitex to Nw | 8858.118712 Nw |
| decitex to kilotex | 0.0001 ktex |
| decitex to linen lea | 16535.15493 NeL |
Show 1 more units
| decitex to kilogram per metre | 1 × 10⁻⁷ kg/m |
|---|
Frequently asked questions
What is the formula for decitex to Yorkshire woollen count?
NY = 19377.13468 ÷ dtex. The two systems are inversely related, so divide the constant by the value; do not multiply. For example, 19377.13468 ÷ 15 = 1291.808979 NY.
Why does a higher dtex give a lower NY?
Yorkshire Woollen Count counts length per unit mass (an indirect system), while decitex counts mass per unit length (a direct system). A finer yarn has a higher indirect number and a lower direct number.
Is the dtex to NY conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- ISO 1144, Textiles — Universal system for designating linear density (Tex System), International Organization for Standardization , Tex system.
- ASTM D2260, Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems, ASTM International , Woollen count (Yorkshire skeins).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "yard" and "pound".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Decitex to Yorkshire Woollen Count (dtex to NY). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/decitex-to-woollen-count/
IEEE
Scientific Converters, "Convert Decitex to Yorkshire Woollen Count (dtex to NY)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/decitex-to-woollen-count/