Yarn Numbering Count Conversion Calculator
Textile mechanics & yarn technology: Convert instantaneously between direct (Tex, dtex, Denier) and indirect (Ne, Nm, NeW, Woolen Run) linear density systems.
Input Yarn Number
Numerical count or linear density
Measurement convention
e.g. 1 for single, 2 for 2-ply
For mass estimation
System Definitions & Standard Basis
- Direct Systems: Higher number = Thicker yarn. Weight per fixed length. Tex ($g/km$), Denier ($g/9km$).
- Indirect Systems: Higher number = Finer yarn. Length per fixed weight. English Cotton ($840\,yd/lb$), Metric ($km/kg$).
- Conversion Core: $\text{Tex} = 590.54 / Ne_c = \text{Denier} / 9 = 1000 / Nm$.
Direct System Values (Linear Density)
Tex (g / 1,000 m)
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Decitex - dtex (g / 10,000 m)
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Denier (g / 9,000 m)
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Indirect System Values (Length per Mass)
English Cotton (Ne / Ne_c)
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Metric Count (Nm)
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Worsted Count (Ne_w)
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Woolen Run (Ne_r)
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Physical Sample Mass
Mass for Specified Length:
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Resultant Ply Count (Ne_c equivalent):
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