Convert Kilotex to Metric Count (ktex to Nm)
Kilotex and metric count are inversely related: Nm = 1 ÷ ktex, so 15 ktex = 0.06666666667 Nm.
Also searched as kilotex to Nm, kilotex in Nm, kilotex into metric count, ktex to Nm, ktex in metric count, ktex into metric count, kilotex to metric count and ktex to metric count converter.
1 ktex = 1 Nm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilotex to Nm converter to paste a column from Excel.
How to Convert Kilotex to Metric Count
- Nm = 1 ÷ ktex
- ktex = 1 ÷ Nm
- Example: convert 15 ktex to Nm: 1 ÷ 15 = 0.06666666667 Nm
Formula
Nm = 1 ÷ ktex
Derivation from SI units:
- 1 ktex = 1 g per metre = 1000 tex = 10⁻³ kg/m (exact)
- Nm = kilometres of yarn per kilogram, so tex = 1000 ÷ Nm
- Solving for Nm: Nm = 1 ÷ ktex (a higher ktex means a lower Nm)
Both units are defined exactly, so the factor is exact. Kilotex definition: kilotex; Metric Count definition: metric count.
Worked examples
- A reading of 2.5 ktex converts to 0.4 Nm.
1 ÷ 2.5 = 0.4 Nm - A value of 4 ktex is 0.25 Nm.
1 ÷ 4 = 0.25 Nm
Kilotex to Metric Count conversion table
| Kilotex (ktex) | Metric Count (Nm) |
|---|---|
| 0.5 ktex | 2 Nm |
| 1 ktex | 1 Nm |
| 2 ktex | 0.5 Nm |
| 2.5 ktex | 0.4 Nm |
| 3 ktex | 0.3333333333 Nm |
| 3.5 ktex | 0.2857142857 Nm |
| 4 ktex | 0.25 Nm |
| 5 ktex | 0.2 Nm |
| 6 ktex | 0.1666666667 Nm |
| 8 ktex | 0.125 Nm |
Where it's used
Kilotex are used for card and draw-frame sliver (about 3–5 ktex), 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.
Kilotex to other yarn count units
| Conversion | 1 ktex equals |
|---|---|
| kilotex to Nm | 1 Nm |
| kilotex to tex | 1000 tex |
| kilotex to denier | 9000 den |
| kilotex to Ne | 0.5905412474 Ne |
| kilotex to decitex | 10000 dtex |
| kilotex to Nw | 0.8858118712 Nw |
| kilotex to woollen count | 1.937713468 NY |
| kilotex to linen lea | 1.653515493 NeL |
Show 1 more units
| kilotex to kilogram per metre | 0.001 kg/m |
|---|
Frequently asked questions
What is the formula for kilotex to metric count?
Nm = 1 ÷ ktex. The two systems are inversely related, so divide the constant by the value; do not multiply. For example, 1 ÷ 15 = 0.06666666667 Nm.
Why does a higher ktex give a lower Nm?
Metric Count counts length per unit mass (an indirect system), while kilotex counts mass per unit length (a direct system). A finer yarn has a higher indirect number and a lower direct number.
Is the ktex to Nm conversion exact?
Yes. Both units are defined exactly, and 1 ktex is exactly 1 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 Kilotex to Metric Count (ktex to Nm). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/kilotex-to-nm/
IEEE
Scientific Converters, "Convert Kilotex to Metric Count (ktex to Nm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/kilotex-to-nm/