Yarn count is the numerical expression of yarn fineness — how thick or thin a yarn is. The problem is that the global textile industry uses several incompatible systems: Ne (English count, used for cotton), Nm (metric count, used for wool and synthetics), Tex (used in technical and European standards), and Denier (used for filament yarns like polyester and nylon). If a supplier in Bangladesh quotes 30 Ne and a buyer specifies 30 Tex, they are talking about completely different yarns. This guide explains each system and the conversion formulas.
The Four Main Yarn Count Systems
The key difference between count systems is whether they are indirect (higher number = finer yarn) or direct (higher number = coarser/heavier yarn).
Yarn Count System Overview
| System | Symbol | Definition | Type | Used For |
|---|---|---|---|---|
| English count | Ne or 's' | Number of 840-yard hanks per pound of yarn | Indirect (higher = finer) | Cotton, cotton blends |
| Metric count | Nm | Number of 1,000-metre hanks per kilogram | Indirect (higher = finer) | Wool, synthetics, technical yarns |
| Tex | Tex | Weight in grams per 1,000 metres of yarn | Direct (higher = coarser) | International standard (ISO) |
| Denier | D or Den | Weight in grams per 9,000 metres of yarn | Direct (higher = coarser) | Filament yarns (polyester, nylon, silk) |
Conversion Formulas
Ne to Nm: Nm = Ne × 1.693 Ne to Tex: Tex = 590.5 / Ne Ne to Denier: Denier = 5,315 / Ne Nm to Ne: Ne = Nm / 1.693 Nm to Tex: Tex = 1,000 / Nm Nm to Denier: Denier = 9,000 / Nm Tex to Ne: Ne = 590.5 / Tex Tex to Nm: Nm = 1,000 / Tex Tex to Denier: Denier = Tex × 9 Denier to Tex: Tex = Denier / 9 Denier to Ne: Ne = 5,315 / Denier
Quick Reference Conversion Table
The most commonly traded yarn counts in Bangladesh's knit textile sector are 20 Ne through 40 Ne for ring-spun cotton. Here is how they compare across systems.
Common Cotton Yarn Counts — Cross-System Reference
| Ne (English) | Nm (Metric) | Tex | Denier | Typical Use |
|---|---|---|---|---|
| 10 Ne | 16.9 Nm | 59.0 Tex | 531 D | Very coarse — heavy jersey, socks |
| 20 Ne | 33.9 Nm | 29.5 Tex | 266 D | Medium heavy jersey, fleece |
| 24 Ne | 40.6 Nm | 24.6 Tex | 221 D | Standard single jersey |
| 30 Ne | 50.8 Nm | 19.7 Tex | 177 D | Fine jersey, t-shirts |
| 40 Ne | 67.7 Nm | 14.8 Tex | 133 D | Fine quality t-shirts, interlock |
Tip
When receiving yarn from a supplier, always verify count with a wrap reel and weighing scale rather than relying on the label alone. Mislabelled count — particularly receiving 24 Ne when 30 Ne was ordered — will produce a heavier GSM fabric that will fail buyer inspection for weight specification.