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Yarn calculator

Yarn Diameter Precise

Calculate precise yarn diameter from fiber density, linear density units, and packing factor.

Fiber density (g/cc)
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Diameter (cm)
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Diameter (mm)
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Diameter (inch)
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Method and formula

Yarn Diameter (cm)=1×2.5429.3×(Yarn Packing (%)100)×Fiber Density×(5315Yarn LD (Denier))Yarn Diameter (mm)=Yarn Diameter (cm)×10Yarn Diameter (inch)=Yarn Diameter (cm)2.54\begin{aligned} \text{Yarn Diameter (cm)} &= \frac{1 \times 2.54}{29.3 \times \sqrt{\left(\frac{\text{Yarn Packing (\%)}}{100}\right) \times \text{Fiber Density} \times \left(\frac{5315}{\text{Yarn LD (Denier)}}\right)}} \\[1em] \text{Yarn Diameter (mm)} &= \text{Yarn Diameter (cm)} \times 10 \\[1em] \text{Yarn Diameter (inch)} &= \frac{\text{Yarn Diameter (cm)}}{2.54} \end{aligned}

Input variables

VariableExpected entry
Yarn count / linear densityEnter a positive measured value.
Input unitChoose: Ne, Nm, Tex, Denier, Dtex
Select fiberChoose: Cotton, Wool, Viscose, Jute, Sisal, Silk, Hemp, Flax, Acrylic / PAN, Modacrylic, Polyoxazole, Polyamide-imide, Polybenzimidazole, OPAN, PP, PA 6, PA 6,6, PET, PBT, PA 12, PA 6,12, PA 6,11, LDPE, HDPE, p-Aramid, m-Aramid, PS, PMMA, Carbon, Carbon HM, Carbon UHM
Fiber packing (%)Enter a positive measured value.

Calculation workflow

  1. Enter the measurements in the displayed units.
  2. Check the selected yarn, fiber, weave, or trade unit where shown.
  3. Review each calculated output and its unit.
  4. Use Copy results to save the displayed values to recent history.

Outputs

  • Fiber density (g/cc)
  • Diameter (cm)
  • Diameter (mm)
  • Diameter (inch)