**Definition of Yarn Count:-**

To express the different thicknesses of yarns it is convenient to use a number in the Textile Industry which is known as the “Count” of yarn or thread. It may be single or folded yarns. In this article, we will know different** yarn count systems**, conversion, definitions, and formulas of textiles.

**According to Textile Institute:**

“Count a number indicating the mass per unit length or the length per unit mass of yarn”.

The various systems of numbering yarns may be broadly divided into two systems:-

- Indirect system or Fixed weight system
- Direct system or Fixed Length System

**Indirect system or Fixed weight system:**

- In this system, the count of yarn expresses the number of length units in one weight unit.
- The higher the count finer is the yarn.
- It is based on the fixed weight system.
- This is the traditional system of yarn linear density measurement.
- The system is generally used for Metric, cotton, worsted, woolen (American Cut, American Run, Hawick, Dewsbury, Yorkshire skein), Spun rayon(staple fiber), French cotton, Bump cotton, Asbestos(British & American). Fibre Glass, etc…..

Name of System |
Definition |

English Cotton Count | No. of 840yards hank per pound(lbs.) |

French Cotton Count | No. of 1000 meters hanks per 500gm. |

Metric Count | No. of 1000 meters hanks per 1kg(1000gm.) |

Spun Silk Count | No. of 840 yards hank per pound(lbs.) |

Silk Count (Ounce) | No. of 1000 yards hank per ounce(oz.) |

Spun Rayon Staple Fibre Count | No. of 840 yards hank per pound(lbs.) |

Worsted & Mohair Count | No. of 560 yards hank per pound(lbs.) |

Woolen Count-American Cut | No. of 300 yards hank or cut per pound(lbs.) |

Woolen Count-American Run | No. of 100 yards hank per Ounce(oz.) |

Woolen Count-Yorkshire Skeins | No. of 256 yards hank(skeins) per pound(lbs.),
or No. of yards per Dram |

Fibreglass Count | No. of 100 yards hank (Cut) per pound(lbs.) |

Asbestos Count-British | No. of 50 yards hank per pound(lbs.) |

Asbestos Count-American | No. of 100 yards hank per pound(lbs.) |

**2. Direct System Or Fixed Length System: **

- In this system, the count of yarn expresses the number of weight units in one length unit.
- The higher the count coarser is the yarn.
- It is a fixed-length system.
- The system is used for Denier count, hemp & jute counts, Grex count. Tex count, Etc…

Name of System |
Definition |

Tex Count | Weight in gms. Per 1000 meter. |

Grex Count | Weight in gms. Per 10000mtr. |

Denier Count | Weight in gms. Per 9000 mtr. |

Jute Count | Weight in lbs. of 14400 yds. Spindle |

Hemp Count | Weight in lbs. of 14400 yds. Spindle |

Flax Count | Weight in lbs. of 14400 yds. Spindle |

Linen Count | Weight in lbs. of 14400 yds. Spindle |

Silk Count (Dram System) | Weight in Drams of 1000 yards hank. |

**Definitions & Formulas of Yarn Count Systems:**

**1. English Cotton system (Ne)**

The count of cotton yarn is the number of hanks, each of 840 yards in 1 lb. ( 1 lb. weight is considered as a fixed weight).

……………………………………………..Length of yarn in Yards

English Cotton count (Ne) = ———————————————–

…………………………………………..Weight of yarn in lb. X 840

**2. French cotton count (Nf)**

The French cotton count is the no. of hanks of 1000 meters which weighs 500 gms.

…………………………………………….Length of yarn in Meters

French Cotton count (Nf) = ————————————————–

………………………………………..Weight of yarn in 1 km X 2000

**3. Metric count System (Nm)**

The metric count of yarn is the no. of hanks, each of 1 km. which 1 kg.

………………………………………Length of yarn in Mtr

Metric Count (Nm) = ————————————————–

…………………………………Weight of yarn in kg. X 1000

**4. Spun silk count system**

The count of spun silk system in the total no. of hanks, each of 840 yds weighing one pound.

This system is used for the yarn made from pure silk waste.

……………………………..Length of yarn in Yards

Spun Silk Count = ———————————————-

……………………………Weight of yarn in lb. X 840

**5. Worsted & Mohair Count system**

The count of yarn in worsted & mohair counts system the no. of hanks, each of 560 yards weighing one pound.

……………………………………………Length of yarn in Yards

Worsted & Mohair Count = ———————————————-

…………………………………………Weight of yarn in lb. X 560

**6. Woolen count- Yorkshire Skeins System**

The weight unit of 6 lbs. is fixed and length unit as a skein of 1536 yards is fixed.

…………………………………………Length of yarn in Yards

Yorkshire Skeins System = ——————————————–

………………………………………Weight of yarn in lb. X 256

**i. Woolen count- American Cut System**

The count of woolen yarn in American Cyt system is the no. of Cuts each of 300 yards weighing one pound.

………………………………………………Length of yarn in Yards

**ii. American Cut System** = ———————————————

……………………………………………Weight of yarn in lb. X 300

**7. Asbestos count-American System**

The count of yarn in asbestos American system of hanks each of 100 yards weighing one pound.

………………………………………………Length of yarn in Yards

Asbestos American System = ————————————————

…………………………………………….Weight of yarn in lb. X 100

**8. Fiberglass System**

The count of yarn in the fiberglass system is the no. of cuts or hanks each of 100 yards weight in one pound.

…………………………………Length of yarn in Yards

Fiberglass System = ———————————————-

………………………………Weight of yarn in lb. X 100

**9. Tex count system (gK)**

The Tex count of the yarn is the no. of gms. In 1000 mts.

It is a Direct System of Yarn numbering.

………………………………………..Weight of yarn in gms.

Tex count system (gK) = ————————————————

…………………………………….Length of yarn in 1000 mts

**10. Grex count system**

In the grex count system the no. of gms that 10000 mts. Weight indicates the count.

………………………..Weight of yarn in gms. X 10000

Grex System = ——————————————————–

……………………………….Length of yarn in mts

**11. Denier count system (Td)**

The denier count is weight in gms of 9000 mts of yarn.

……………………………………Weight of yarn in gms.

Denier count (Td) = ————————————————-

……………………………….Length of yarn in 9000 mts

**12. Jute/Hemp/Flex and Linen System (Dry Spun)**

In these systems, the length unit is a spindle of 14400 yards and the weight unit is one pound.

………………………………Weight of yarn in pounds X 14400

Jute count System = ———————————————————-

………………………………………Length of yarn in yards

**14. Silk Count (Dram System)**

In silk count system the wt. unit as one dram and the length unit as 1000 yards.

…………………………………………..Weight of yarn in Drams X 1000

Silk Count (Dram System) = ——————————————————–

………………………………………………Length of yarn in yards

**Basic Conversation of Yarn Count Systems:**

**Linear Yarn Count Systems measurement:**

1 Inch =25.4 mm | 1 feet = 12 Inch |

1 Inch = 2.54 cm | 1 Inch = 0.0833 feet |

1 mm =0.03937 Inch | 1 feet = 0.3048 meter |

1 cm = 10 mm | 1 yard =36 Inch |

10 cm =3.94 Inch = 1 Decimeter | 1 meter=39.37 Inch |

1 cm = 0.3937 cm | 1 meter =1.0936 yard |

1 yard =0.9144 meter | 1 yard =3 feet |

1000 meter = 1 km | 1 km = 0.6214 mile |

**Weighs:**

1 kg. = 1000 gm | 1 milligram = 0.015 grains |

1 gm. = 1000 milligram | 1 centigram = 10 mg. |

1 kg. = 2.205 pounds(lbs.) | 1 lbs. = 453.6gms. |

1 lbs. = 0.4536 kg | 1 lbs. = 7000 grains. |

1 lbs. =1.602 gm | 1 ounce(oz) = 28.35 gms. |

1 grains =0.065 gms. | 1 dram = 1.772 gms |

1 metric ton = 1000 kgs | 1 metric ton = 0.984 ton |

**Temperature:**

1° F = -17.22° C | 1° C = 274.15° K |

1° F = 255.928° K | 1° K = -457.87 °F |

1° C = 33.8° F | 1° K = -272.15° C |

**References:-**

- Useful Tips in Spinning By S. K. Shrivastava.
- Aritho-Spinweave Book of Calculations of Spinning & Weaving -By T. C. Shah, P. M. Valand, V. H. Vadalikar.
- Principle of Textile Testing By J. E. Booth.

Author of this Article:Bhavdip K. PaldiyaDept. of Textile Technology Sarvajanik College of Engineering & Technology, Surat, India Cell: +91 9662020909 Email: [email protected]

Hi Bhavdip,

thanks for sharing the above detail.

in actual the deffination of Yarn count is also….

^Linear density of yarn^