Yarn Numbering System
Yarn numbering systems
Tex-System
Swicofil indicates the counts of their yarns by means of the Tex-system.
Tex Units
Term
Definition
Basic Tex Unit [tex]
Mass of yarn in grams per 1000 meters length
Decimal fraction
Mass of yarn in grams per 10'000 meters length
Decitex [dtex]
1 g / 10'000 m = 1/10 tex
Decitex is the count grading for filament and spinning yarns recognized by all international bodies in the man-made fibres industry.
Decimal multiple
Mass in kilograms per 1000 meters length.
Kilotex [ktex]
1 kg / 1000 m = 1000 tex)
Kilotex is used to state the counts of spinning tow and similar semi-finished and finished products.
Other numbering Systems
Count denier [den]
Mass of yarn in grams for length of 9000 meters
Metric yarns number [Nm]
Length in meters per 1 gram of mass
English cotton yarn number [Ne or ECC)]
Number of 840 yards strands per 1 English pound of mass
Wool runs
Number of 1600 yards strands per 1 English pound of mass
Wool, worsted (NeK)
Number of 560 yards strands per 1 English pound of mass
Wool, woolen measure (NeS)
Number of 256 yards strands per 1 English pound of mass
Linen Count (NeL or Lea)
Number of 300 yards strands per 1 English pound of mass
Spun Silk
Number of 840 yards strands per 1 English pound of mass
An interactive Conversion table can be found here
Worsted wool is nothing to do with worsted weight yarn. Worsted wool is wool which is carded and combed so that all the fibres are parallel. Woolen measure or Yorkshire wool is carded but not combed, so is a little rougher. Worsted wool is usually very fine and used for suits and fine fabric. Hand knitting yarn is usually woolen type yarn. When quoting wool some manufacturers specify "worsted" or "woolen". Most do not!
Conversion Formulas for the various numbering systems
convert into known tex decitex (dtex) denier (den)
Metric No.
(Nm)
English Cotton No.
(Ne)
tex 10 x tex
Tex-System
Swicofil indicates the counts of their yarns by means of the Tex-system.
Tex Units
Term
Definition
Basic Tex Unit [tex]
Mass of yarn in grams per 1000 meters length
Decimal fraction
Mass of yarn in grams per 10'000 meters length
Decitex [dtex]
1 g / 10'000 m = 1/10 tex
Decitex is the count grading for filament and spinning yarns recognized by all international bodies in the man-made fibres industry.
Decimal multiple
Mass in kilograms per 1000 meters length.
Kilotex [ktex]
1 kg / 1000 m = 1000 tex)
Kilotex is used to state the counts of spinning tow and similar semi-finished and finished products.
Other numbering Systems
Count denier [den]
Mass of yarn in grams for length of 9000 meters
Metric yarns number [Nm]
Length in meters per 1 gram of mass
English cotton yarn number [Ne or ECC)]
Number of 840 yards strands per 1 English pound of mass
Wool runs
Number of 1600 yards strands per 1 English pound of mass
Wool, worsted (NeK)
Number of 560 yards strands per 1 English pound of mass
Wool, woolen measure (NeS)
Number of 256 yards strands per 1 English pound of mass
Linen Count (NeL or Lea)
Number of 300 yards strands per 1 English pound of mass
Spun Silk
Number of 840 yards strands per 1 English pound of mass
An interactive Conversion table can be found here
Worsted wool is nothing to do with worsted weight yarn. Worsted wool is wool which is carded and combed so that all the fibres are parallel. Woolen measure or Yorkshire wool is carded but not combed, so is a little rougher. Worsted wool is usually very fine and used for suits and fine fabric. Hand knitting yarn is usually woolen type yarn. When quoting wool some manufacturers specify "worsted" or "woolen". Most do not!
Conversion Formulas for the various numbering systems
convert into known tex decitex (dtex) denier (den)
Metric No.
(Nm)
English Cotton No.
(Ne)
tex 10 x tex