Nexis Fibers states the counts of their multifilament
Yarns by of the Tex-system.
| Term | Definition |
| - Basic Tex Units - Tex | Mass of yarn in grams per 1’000 metres length |
| - Decimal fraction - dtex | Mass of yarn in grams per 10’000 metres length |
| Count denier [den] | Mass of yarn in grams for length of 9000 metres |
| Metric yarn number [Nm] | Length in metres per 1 gram of mass |

| Ibs - N N - Ibs | Breaking Force pounds-force (lbs) -> x 4.4484 Newton (N) Newton (N) -> x 0.2248 pounds-force (lbs) |
| d - dtex dtex - d | Yarn Size Denier (D) -> x 1.111 decitex (dtex) decitex (dtex) -> x 0.900 Denier (D) |
| g/d - cN/tex cN/tex - g/d | Tenacity Grams-force/Denier (G/D) -> x 8.830 centiNewton/tex (cN/tex) centiNewton/tex (cN/tex)-> x 0.1132 Grams-force/Denier (G/D) |
| °F - °C °C - °F | Temperature (Fahrenheit - 32) -> x 0.555 centigrade (°C) (1.8 x centigrade) -> + 32 Fahrenheit (°F) |
| kg - lbs lbs - kg | Mass kilogram (kg)-> x 2.2046 pounds (lbs) pounds (lbs)-> x 0.4536 kilogram (kg) |