Convert Decitex to Metric Count (dtex to Nm)
Decitex and metric count are inversely related: Nm = 10000 ÷ dtex, so 15 dtex = 666.6666667 Nm.
Also searched as decitex to Nm, decitex in Nm, decitex into metric count, dtex to Nm, dtex in metric count, dtex into metric count, decitex to metric count and dtex to metric count converter.
1 dtex = 10000 Nm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk decitex to Nm converter to paste a column from Excel.
How to Convert Decitex to Metric Count
- Nm = 10000 ÷ dtex
- dtex = 10000 ÷ Nm
- Example: convert 15 dtex to Nm: 10000 ÷ 15 = 666.6666667 Nm
Formula
Nm = 10000 ÷ dtex
Derivation from SI units:
- 1 dtex = 1 g per 10 000 m = 0.1 tex = 10⁻⁷ kg/m (exact)
- Nm = kilometres of yarn per kilogram, so tex = 1000 ÷ Nm
- Solving for Nm: Nm = 10000 ÷ dtex (a higher dtex means a lower Nm)
Both units are defined exactly, so the factor is exact. Decitex definition: decitex; Metric Count definition: metric count.
Worked examples
- A reading of 56 dtex converts to 178.5714286 Nm.
10000 ÷ 56 = 178.5714286 Nm - A value of 235 dtex is 42.55319149 Nm.
10000 ÷ 235 = 42.55319149 Nm
Decitex to Metric Count conversion table
| Decitex (dtex) | Metric Count (Nm) |
|---|---|
| 11 dtex | 909.0909091 Nm |
| 22 dtex | 454.5454545 Nm |
| 33 dtex | 303.030303 Nm |
| 44 dtex | 227.2727273 Nm |
| 56 dtex | 178.5714286 Nm |
| 78 dtex | 128.2051282 Nm |
| 110 dtex | 90.90909091 Nm |
| 167 dtex | 59.88023952 Nm |
| 235 dtex | 42.55319149 Nm |
| 330 dtex | 30.3030303 Nm |
| 550 dtex | 18.18181818 Nm |
| 1100 dtex | 9.090909091 Nm |
Where it's used
Decitex are used for polyester and nylon filament yarns (for example 167 dtex), while metric count appear in wool, linen and spun yarns in continental Europe. 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 Nm | 10000 Nm |
| decitex to tex | 0.1 tex |
| decitex to denier | 0.9 den |
| decitex to Ne | 5905.412474 Ne |
| decitex to Nw | 8858.118712 Nw |
| decitex to kilotex | 0.0001 ktex |
| decitex to woollen count | 19377.13468 NY |
| 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 metric count?
Nm = 10000 ÷ dtex. The two systems are inversely related, so divide the constant by the value; do not multiply. For example, 10000 ÷ 15 = 666.6666667 Nm.
Why does a higher dtex give a lower Nm?
Metric 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 Nm conversion exact?
Yes. Both units are defined exactly, and 1 dtex is exactly 10000 Nm.
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 , Metric count (Nm).
- 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 Metric Count (dtex to Nm). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/decitex-to-nm/
IEEE
Scientific Converters, "Convert Decitex to Metric Count (dtex to Nm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/decitex-to-nm/