Yarn Count Converter — Denier · Tex · Dtex · Nm · Ne

Convert one yarn count into its equivalent across five systems instantly.

Formula

The canonical unit is Tex. Denier = Tex × 9 · Dtex = Tex × 10 · Nm = 1000 ÷ Tex · Ne = 590.5 ÷ Tex (pure synthetic). Direct systems (tex/denier/dtex) are mass-based — a higher number means a coarser yarn; indirect systems (Nm/Ne) are length-based — a higher number means a finer yarn.

Worked example

150 denier → 150 ÷ 9 = 16.67 tex. From there: Dtex = 16.67 × 10 = 166.7 · Nm = 1000 ÷ 16.67 = 60 · Ne = 590.5 ÷ 16.67 = 35.4. So 150D = 16.67 tex = 60 Nm.

Frequently asked questions

How many tex is 150 denier?

150 denier = 150 ÷ 9 = 16.67 tex (equivalent to 60 Nm). Denier is the weight of 9,000 m, tex of 1,000 m of yarn.

What is the difference between denier and dtex?

Denier is the gram weight of 9,000 m, dtex of 10,000 m. Conversion: dtex = denier × 1.111.

What are direct and indirect count systems?

Direct systems (tex, denier, dtex) measure weight per length — a higher value means a coarser yarn. Indirect systems (Nm, Ne) measure length per weight — a higher value means a finer yarn.

Why is the Ne constant 590.5 for polyester?

The Ne–Tex constant is 590.5 for pure synthetics; cotton uses 583.1 because of moisture. This tool assumes 590.5 for polyester.