Free tools/Yarn & Fabric
Yarn Count Converter
Convert yarn count between Ne, Nm, Tex and Denier: Ne to denier, tex to Ne and back, with the formulas, a yarn count chart for common cotton counts and a denier chart for filament yarns.
Ne
30
Nm
50.8
Tex
19.68
Denier
177.2
The formula
Tex = 590.5 / Ne = 1000 / Nm = Denier / 9. All four systems express linear density; Tex is grams per 1000 m.
Worked example
Count value: 30, From: Ne (English). Result: Ne = 30; Nm = 50.8; Tex = 19.68; Denier = 177.2.
Yarn count conversion formulas
Tex is the weight in grams of 1,000 metres of yarn, and every other system converts through it. Ne = 590.5 / tex. Nm = 1000 / tex. Denier = 9 x tex, because denier is grams per 9,000 metres.
Ne to denier: denier = 5314.5 / Ne (that is 9 x 590.5). A 30 Ne cotton yarn is 5314.5 / 30 = 177.2 denier. Denier to Ne: Ne = 5314.5 / denier, so a 150 denier polyester is 35.4 Ne.
Tex to Ne: Ne = 590.5 / tex. A 20 tex yarn is 29.5 Ne. Ne to tex: tex = 590.5 / Ne, so 40 Ne is 14.76 tex.
Ne and Nm are indirect systems: a higher number means a finer yarn, because they count length per unit weight. Tex and denier are direct systems: a higher number means a coarser yarn, because they weigh a fixed length. Cotton and blended spun yarns are usually quoted in Ne, wool and some European spinners use Nm, and filament yarns such as polyester and nylon are quoted in denier.
Yarn count chart: common cotton counts (Ne)
| Ne | Nm | Tex | Denier |
|---|---|---|---|
| 6 | 10.16 | 98.42 | 885.8 |
| 10 | 16.93 | 59.05 | 531.4 |
| 16 | 27.10 | 36.91 | 332.2 |
| 20 | 33.87 | 29.52 | 265.7 |
| 24 | 40.64 | 24.60 | 221.4 |
| 26 | 44.03 | 22.71 | 204.4 |
| 30 | 50.80 | 19.68 | 177.2 |
| 32 | 54.19 | 18.45 | 166.1 |
| 40 | 67.74 | 14.76 | 132.9 |
| 50 | 84.67 | 11.81 | 106.3 |
| 60 | 101.61 | 9.84 | 88.6 |
| 80 | 135.48 | 7.38 | 66.4 |
Common spun yarn counts in Ne with the same yarn in Nm, tex and denier, computed with this calculator (tex = 590.5 / Ne).
Denier to tex and Ne chart: filament yarns
| Denier | Tex | Ne | Nm |
|---|---|---|---|
| 20 | 2.22 | 265.7 | 450.0 |
| 30 | 3.33 | 177.2 | 300.0 |
| 40 | 4.44 | 132.9 | 225.0 |
| 50 | 5.56 | 106.3 | 180.0 |
| 70 | 7.78 | 75.9 | 128.6 |
| 75 | 8.33 | 70.9 | 120.0 |
| 100 | 11.11 | 53.1 | 90.0 |
| 150 | 16.67 | 35.4 | 60.0 |
| 300 | 33.33 | 17.7 | 30.0 |
Common filament deniers with the same yarn in tex, Ne and Nm, computed with this calculator (tex = denier / 9).
Assumptions
- Indirect (Ne, Nm) and direct (Tex, Denier) systems converted via Tex.
Questions
- How do I convert Ne to denier?
- Denier = 5314.5 / Ne. A 30 Ne yarn is 5314.5 / 30 = 177.2 denier, and a 40 Ne yarn is 132.9 denier.
- How do I convert tex to Ne?
- Ne = 590.5 / tex. A 20 tex yarn is 590.5 / 20 = 29.5 Ne. To go back, tex = 590.5 / Ne.
- What is the difference between direct and indirect yarn count systems?
- Direct systems (tex, denier) give the weight of a fixed length, so a bigger number is a coarser yarn. Indirect systems (Ne, Nm) give the length per fixed weight, so a bigger number is a finer yarn.
- What is 150 denier in Ne?
- 150 denier is 16.67 tex, which is 590.5 / 16.67 = 35.4 Ne.
Read the guide
In the platform
Intelactory records which yarn lot went into which fabric roll, dye batch and carton as the work happens, so a count or GSM question traces back to its source.