tex
Linear mass densityexact by definition
The tex is the mass in grams of 1000 metres of yarn, exactly 10⁻⁶ kg/m. It is the SI-aligned unit of textile linear density and the base of the family: decitex, millitex and kilotex are all prefixes on it.
Watch out: Tex counts MASS per length, so a bigger number is a thicker yarn. The older cotton, worsted and linen count systems run the other way, counting length per unit mass, so a higher count is a finer yarn there. Reading one as the other inverts the whole scale.
| 1 | 0.000001 |
Where the unit came from
Adopted in 1960 by the international textile bodies to replace the older count systems, which ran backwards, varied by fibre, and were mutually unconvertible.
One tex in every linear mass density unit
| 10 | decitex (dtex) | |
| 9 | denier (den) | |
| 1 | milligram per meter (mg/m) | |
| 1 | tex (tex)this unit | |
| 0.001 | gram per meter (g/m) | |
| 0.001 | kilogram per kilometer (kg/km) | |
| 0.00001 | gram per centimeter (g/cm) | |
| 0.00000201591 | pound per yard (lb/yd) | |
| 0.000001 | kilogram per meter (kg/m) | |
| 6.71969e-07 | pound per foot (lb/ft) | |
| 5.59974e-08 | pound per inch (lb/in) | |
| 2.08854e-08 | slug per foot (slug/ft) |
Solvers that use linear mass density