Convert Worsted Count to Metric Count (Nw to Nm)
1 worsted count (Nw) = 1.128907878 metric count (Nm). 1 Nm = 0.8858118712 Nw. Example: 15 Nw = 15 × 1.128907878 = 16.93361817 Nm.
Also searched as worsted count to Nm, worsted count in Nm, worsted count into metric count, Nw to Nm, Nw in metric count, Nw into metric count, worsted count to metric count and Nw to metric count converter.
1 Nw = 1.128907878 Nm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk Nw to Nm converter to paste a column from Excel.
How to Convert Worsted Count to Metric Count
- 1 Nw = 1.128907878 Nm
- 1 Nm = 0.8858118712 Nw
- Example: convert 15 Nw to Nm: 15 Nw = 15 × 1.128907878 Nm = 16.93361817 Nm
Formula
Nm = Nw × 1.128907878234
Derivation from SI units:
- Nw = number of 560-yard hanks per pound, so tex = 885.8119 ÷ Nw
- Nm = kilometres of yarn per kilogram, so tex = 1000 ÷ Nm
- 1 Nw = 0.0008858118711724 kg/m ÷ 0.001 kg/m per Nm = 1.128907878234 Nm
Both units are defined exactly, so the factor is exact. Worsted Count definition: worsted count; Metric Count definition: metric count.
Worked examples
- A reading of 24 Nw converts to 27.09378908 Nm.
24 Nw × 1.128907878 = 27.09378908 Nm - A value of 48 Nw is 54.18757816 Nm.
48 Nw × 1.128907878 = 54.18757816 Nm
Worsted Count to Metric Count conversion table
| Worsted Count (Nw) | Metric Count (Nm) |
|---|---|
| 8 Nw | 9.031263026 Nm |
| 12 Nw | 13.54689454 Nm |
| 16 Nw | 18.06252605 Nm |
| 20 Nw | 22.57815756 Nm |
| 24 Nw | 27.09378908 Nm |
| 30 Nw | 33.86723635 Nm |
| 36 Nw | 40.64068362 Nm |
| 40 Nw | 45.15631513 Nm |
| 48 Nw | 54.18757816 Nm |
| 60 Nw | 67.73447269 Nm |
| 64 Nw | 72.25010421 Nm |
| 80 Nw | 90.31263026 Nm |
Where it's used
Worsted Count are used for worsted wool and acrylic yarns, while metric count appear in wool, linen and spun yarns in continental Europe. Both measure yarn count (linear density of yarns and fibres), so the conversion is a fixed factor.
Worsted Count to other yarn count units
| Conversion | 1 Nw equals |
|---|---|
| Nw to Nm | 1.128907878 Nm |
| Nw to tex | 885.8118712 tex |
| Nw to denier | 7972.306841 den |
| Nw to Ne | 0.6666666667 Ne |
| Nw to decitex | 8858.118712 dtex |
| Nw to kilotex | 0.8858118712 ktex |
| Nw to woollen count | 2.1875 NY |
| Nw to linen lea | 1.866666667 NeL |
Show 1 more units
| Nw to kilogram per metre | 0.0008858118712 kg/m |
|---|
Frequently asked questions
How many metric count are in 1 worsted count?
1 Nw = 1.128907878 Nm.
How do I convert worsted count to metric count?
Multiply the value in Nw by 1.128907878. For example, 15 Nw × 1.128907878 = 16.93361817 Nm.
Is the Nw to Nm 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 , Worsted count.
- 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 , Metric count (Nm).
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 Worsted Count to Metric Count (Nw to Nm). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/worsted-count-to-nm/
IEEE
Scientific Converters, "Convert Worsted Count to Metric Count (Nw to Nm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/worsted-count-to-nm/