Convert Yorkshire Woollen Count to Metric Count (NY to Nm)
1 Yorkshire woollen count (NY) = 0.5160721729 metric count (Nm). 1 Nm = 1.937713468 NY. Example: 15 NY = 15 × 0.5160721729 = 7.741082594 Nm.
Also searched as Yorkshire woollen count to Nm, Yorkshire woollen count in Nm, Yorkshire woollen count into metric count, NY to Nm, NY in metric count, NY into metric count, Yorkshire woollen count to metric count and NY to metric count converter.
1 NY = 0.5160721729 Nm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk woollen count to Nm converter to paste a column from Excel.
How to Convert Yorkshire Woollen Count to Metric Count
- 1 NY = 0.5160721729 Nm
- 1 Nm = 1.937713468 NY
- Example: convert 15 NY to Nm: 15 NY = 15 × 0.5160721729 Nm = 7.741082594 Nm
Formula
Nm = NY × 0.5160721729071
or Nm = NY ÷ 1.93771346819
Derivation from SI units:
- Yorkshire woollen count = number of 256-yard skeins per pound, so tex = 1937.7 ÷ count
- Nm = kilometres of yarn per kilogram, so tex = 1000 ÷ Nm
- 1 NY = 0.00193771346819 kg/m ÷ 0.001 kg/m per Nm = 0.5160721729071 Nm
Both units are defined exactly, so the factor is exact. Yorkshire Woollen Count definition: Yorkshire woollen count; Metric Count definition: metric count.
Worked examples
- A reading of 10 NY converts to 5.160721729 Nm.
10 NY × 0.5160721729 = 5.160721729 Nm - A value of 20 NY is 10.32144346 Nm.
20 NY × 0.5160721729 = 10.32144346 Nm
Yorkshire Woollen Count to Metric Count conversion table
| Yorkshire Woollen Count (NY) | Metric Count (Nm) |
|---|---|
| 4 NY | 2.064288692 Nm |
| 6 NY | 3.096433037 Nm |
| 8 NY | 4.128577383 Nm |
| 10 NY | 5.160721729 Nm |
| 12 NY | 6.192866075 Nm |
| 16 NY | 8.257154767 Nm |
| 20 NY | 10.32144346 Nm |
| 24 NY | 12.38573215 Nm |
| 30 NY | 15.48216519 Nm |
| 40 NY | 20.64288692 Nm |
Where it's used
Yorkshire Woollen Count are used for woollen-spun yarns for tweeds and blankets, 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.
Yorkshire Woollen Count to other yarn count units
| Conversion | 1 NY equals |
|---|---|
| woollen count to Nm | 0.5160721729 Nm |
| woollen count to tex | 1937.713468 tex |
| woollen count to denier | 17439.42121 den |
| woollen count to Ne | 0.3047619048 Ne |
| woollen count to decitex | 19377.13468 dtex |
| woollen count to Nw | 0.4571428571 Nw |
| woollen count to kilotex | 1.937713468 ktex |
| woollen count to linen lea | 0.8533333333 NeL |
Show 1 more units
| woollen count to kilogram per metre | 0.001937713468 kg/m |
|---|
Frequently asked questions
How many metric count are in 1 Yorkshire woollen count?
1 NY = 0.5160721729 Nm.
How do I convert Yorkshire woollen count to metric count?
Multiply the value in NY by 0.5160721729, or divide it by 1.937713468. For example, 15 NY × 0.5160721729 = 7.741082594 Nm.
Is the NY 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 , 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".
- 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 Yorkshire Woollen Count to Metric Count (NY to Nm). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/woollen-count-to-nm/
IEEE
Scientific Converters, "Convert Yorkshire Woollen Count to Metric Count (NY to Nm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/woollen-count-to-nm/