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

9 x tex

1000

tex

591

tex

decitex

(dtex)

dtex

10

0.9 x dtex

10000

dtex

5910

dtex

denier

(den)

den

9

den

0.9

9000

den

5314

den

Metric No.

(Nm)

1000

Nm

10000

Nm

9000

Nm

0.59 x Nm

English Cotton No.

(Ne)

591

Ne

5910

Ne

5314

Ne

Ne x 1.69

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Yarn count conversion

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Conversion Factors

To Convert

To

Multiply by

Length

inches

millimeters

25.4

inches

feet

0.0833

feet

inches

12*

feet

meters

0.3048

feet

yards

0.3333

feet

miles (U.S. statute)

0.0001894

yards

yards

3*

yards

miles (U.S. statute)

0.0005682

miles (U.S. statute)

feet

5280*

miles (U.S. statute)

yards

1760*

miles (U.S. statute)

meters

1609

miles (U.S. statute)

nautical miles

0.868

meters

feet

3.281

meters

yards

1.094

meters

miles (U.S. statute)

0.0006214

nautical miles

miles (U.S. statute)

1.152

Area

square inches

square centimeters

6.452

square inches

square feet

0.006944

square feet

square inches

144*

square feet

square meters

0.09290

square meters

square feet

10.76

square miles

square yards

3,097,600*

square yards

square feet

9*

Volume

cubic inches

cubic centimeters

16.39

cubic inches

cubic feet

0.0005787

cubic feet

cubic inches

1728*

cubic feet

cubic meters

0.02832

cubic feet

U.S. gallons

7.481

cubic meters

cubic feet

35.31

liters

quarts (U.S. liquid)

1.057

quarts (U.S. liquid)

liters

0.9463

U.S. gallons

barrels (petroleum)

0.02381

U.S. gallons

cubic feet

0.1337

U.S. gallons

Imperial gallons

0.8327

barrels (petroleum)

U.S. gallons

42*

Imperial gallons

U.S. gallons

1.201

milliliters

cubic centimeters

1*

Time

seconds

minutes

0.01667

seconds

hours

0.0002778

seconds

days

0.00001157

minutes

seconds

60*

minutes

hours

0.01667

minutes

days...

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