Convert Metric Count to Kilograms per Metre (Nm to kg/m)
Metric Count and kilograms per metre are inversely related: kg/m = 0.001 ÷ Nm, so 15 Nm = 0.00006666666667 kg/m.
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1 Nm = 0.001 kg/m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk Nm to kilogram per metre converter to paste a column from Excel.
How to Convert Metric Count to Kilogram per Metre
- kg/m = 0.001 ÷ Nm
- Nm = 0.001 ÷ kg/m
- Example: convert 15 Nm to kg/m: 0.001 ÷ 15 = 0.00006666666667 kg/m
Formula
kg/m = 0.001 ÷ Nm
Derivation from SI units:
- Nm = kilometres of yarn per kilogram, so tex = 1000 ÷ Nm
- The coherent SI unit of linear density: mass in kilograms per metre of length.
- Solving for kg/m: kg/m = 0.001 ÷ Nm (a higher Nm means a lower kg/m)
Both units are defined exactly, so the factor is exact. Metric Count definition: metric count; Kilogram per Metre definition: kilogram per metre.
Worked examples
- A reading of 34 Nm converts to 0.00002941176471 kg/m.
0.001 ÷ 34 = 0.00002941176471 kg/m - A value of 68 Nm is 0.00001470588235 kg/m.
0.001 ÷ 68 = 0.00001470588235 kg/m
Metric Count to Kilogram per Metre conversion table
| Metric Count (Nm) | Kilograms per Metre (kg/m) |
|---|---|
| 10 Nm | 0.0001 kg/m |
| 17 Nm | 0.00005882352941 kg/m |
| 20 Nm | 0.00005 kg/m |
| 24 Nm | 0.00004166666667 kg/m |
| 34 Nm | 0.00002941176471 kg/m |
| 40 Nm | 0.000025 kg/m |
| 50 Nm | 0.00002 kg/m |
| 60 Nm | 0.00001666666667 kg/m |
| 68 Nm | 0.00001470588235 kg/m |
| 80 Nm | 0.0000125 kg/m |
| 100 Nm | 0.00001 kg/m |
| 135 Nm | 0.000007407407407 kg/m |
Where it's used
Metric Count are used for wool, linen and spun yarns in continental Europe, while kilograms per metre appear in ropes, cables and heavy tows. 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.
Metric Count to other yarn count units
| Conversion | 1 Nm equals |
|---|---|
| Nm to kilogram per metre | 0.001 kg/m |
| Nm to tex | 1000 tex |
| Nm to denier | 9000 den |
| Nm to Ne | 0.5905412474 Ne |
| Nm to decitex | 10000 dtex |
| Nm to Nw | 0.8858118712 Nw |
| Nm to kilotex | 1 ktex |
| Nm to woollen count | 1.937713468 NY |
Show 1 more units
| Nm to linen lea | 1.653515493 NeL |
|---|
Frequently asked questions
What is the formula for metric count to kilograms per metre?
kg/m = 0.001 ÷ Nm. The two systems are inversely related, so divide the constant by the value; do not multiply. For example, 0.001 ÷ 15 = 0.00006666666667 kg/m.
Why does a higher Nm give a lower kg/m?
Metric Count counts length per unit mass (an indirect system), while kilograms per metre counts mass per unit length (a direct system). A finer yarn has a higher indirect number and a lower direct number.
Is the Nm to kg/m conversion exact?
Yes. Both units are defined exactly, and 1 Nm is exactly 0.001 kg/m.
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".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
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 Kilograms per Metre (Nm to kg/m). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-count/nm-to-kilograms-per-meter/
IEEE
Scientific Converters, "Convert Metric Count to Kilograms per Metre (Nm to kg/m)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-count/nm-to-kilograms-per-meter/