Convert Metric Count to Worsted Count (Nm to Nw)
1 metric count (Nm) = 0.8858118712 worsted count (Nw). 1 Nw = 1.128907878 Nm. Example: 15 Nm = 15 × 0.8858118712 = 13.28717807 Nw.
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1 Nm = 0.8858118712 Nw
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk Nm to Nw converter to paste a column from Excel.
How to Convert Metric Count to Worsted Count
- 1 Nm = 0.8858118712 Nw
- 1 Nw = 1.128907878 Nm
- Example: convert 15 Nm to Nw: 15 Nm = 15 × 0.8858118712 Nw = 13.28717807 Nw
Formula
Nw = Nm × 0.8858118711724
or Nw = Nm ÷ 1.128907878234
Derivation from SI units:
- Nm = kilometres of yarn per kilogram, so tex = 1000 ÷ Nm
- Nw = number of 560-yard hanks per pound, so tex = 885.8119 ÷ Nw
- 1 Nm = 0.001 kg/m ÷ 0.0008858118711724 kg/m per Nw = 0.8858118711724 Nw
Both units are defined exactly, so the factor is exact. Metric Count definition: metric count; Worsted Count definition: worsted count.
Worked examples
- A reading of 34 Nm converts to 30.11760362 Nw.
34 Nm × 0.8858118712 = 30.11760362 Nw - A value of 68 Nm is 60.23520724 Nw.
68 Nm × 0.8858118712 = 60.23520724 Nw
Metric Count to Worsted Count conversion table
| Metric Count (Nm) | Worsted Count (Nw) |
|---|---|
| 10 Nm | 8.858118712 Nw |
| 17 Nm | 15.05880181 Nw |
| 20 Nm | 17.71623742 Nw |
| 24 Nm | 21.25948491 Nw |
| 34 Nm | 30.11760362 Nw |
| 40 Nm | 35.43247485 Nw |
| 50 Nm | 44.29059356 Nw |
| 60 Nm | 53.14871227 Nw |
| 68 Nm | 60.23520724 Nw |
| 80 Nm | 70.86494969 Nw |
| 100 Nm | 88.58118712 Nw |
| 135 Nm | 119.5846026 Nw |
Where it's used
Metric Count are used for wool, linen and spun yarns in continental Europe, while worsted count appear in worsted wool and acrylic yarns. Both measure yarn count (linear density of yarns and fibres), so the conversion is a fixed factor.
Metric Count to other yarn count units
| Conversion | 1 Nm equals |
|---|---|
| Nm to Nw | 0.8858118712 Nw |
| Nm to tex | 1000 tex |
| Nm to denier | 9000 den |
| Nm to Ne | 0.5905412474 Ne |
| Nm to decitex | 10000 dtex |
| Nm to kilotex | 1 ktex |
| Nm to woollen count | 1.937713468 NY |
| Nm to linen lea | 1.653515493 NeL |
Show 1 more units
| Nm to kilogram per metre | 0.001 kg/m |
|---|
Frequently asked questions
How many worsted count are in 1 metric count?
1 Nm = 0.8858118712 Nw.
How do I convert metric count to worsted count?
Multiply the value in Nm by 0.8858118712, or divide it by 1.128907878. For example, 15 Nm × 0.8858118712 = 13.28717807 Nw.
Is the Nm to Nw 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
- 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".
- ASTM D2260, Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems, ASTM International , Worsted count.
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 Metric Count to Worsted Count (Nm to Nw). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/nm-to-worsted-count/
IEEE
Scientific Converters, "Convert Metric Count to Worsted Count (Nm to Nw)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/nm-to-worsted-count/