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Tex vs. Denier: What's the Difference?

By Aimie Carlson & Harlon Moss || Updated on May 22, 2024
Tex measures fiber thickness in grams per 1,000 meters, while denier measures fiber weight in grams per 9,000 meters, commonly used for hosiery and fabrics.

Key Differences

Tex is a unit of measurement that quantifies the thickness of a fiber based on its weight in grams per 1,000 meters. This metric is widely used in various industries, including textiles and yarn production, to provide a standardized understanding of fiber thickness and strength. Denier, on the other hand, measures the weight of a fiber in grams per 9,000 meters. This unit is traditionally used in the textile industry, especially for hosiery, stockings, and other lightweight fabrics.
While tex provides a direct measure of fiber thickness based on a specific length, denier offers insight into the weight and therefore the relative thickness of fibers over a longer length. This distinction makes tex more suitable for applications requiring precise thickness measurements, whereas denier is more practical for consumer fabrics where fiber weight and feel are critical.
In terms of conversion, tex can be related to denier through a simple calculation, as 1 tex equals approximately 9 deniers. This relationship helps textile professionals convert measurements and understand material properties across different standards.
Tex focuses on fiber thickness by weight per 1,000 meters, useful for technical applications, whereas denier measures fiber weight per 9,000 meters, commonly used for everyday fabrics and hosiery.

Comparison Chart

Measurement Unit

Grams per 1,000 meters
Grams per 9,000 meters

Primary Use

Technical and industrial applications
Consumer textiles, hosiery, and lightweight fabrics

Fineness Indicator

Direct measure of thickness
Weight-based fineness or coarseness


1 tex ≈ 9 deniers
1 denier ≈ 0.111 tex

Application Focus

Durability and performance
Fabric weight and feel

Tex and Denier Definitions


Used in technical textiles.
This rope has a tex rating suitable for heavy-duty use.


Weight of fiber in grams per 9,000 meters.
A fabric with a higher denier number is typically heavier.


Weight of fiber in grams per 1,000 meters.
A higher tex number means a thicker fiber.


Used in consumer textiles.
She prefers a denier of 40 for more opaque tights.


Indicates fiber strength.
The 10 tex yarn is known for its strength and resilience.


Common in fashion and hosiery.
The denier of this fabric ensures it is lightweight and breathable.


Unit measuring fiber thickness.
The yarn's tex is 20, indicating its durability.


Indicates fabric fineness.
Lower denier numbers signify finer and more delicate materials.


Common in industrial applications.
Engineers prefer materials with a specific tex for consistency.


One that denies
A denier of harsh realities.


A milligram per meter, a unit of linear mass density for thread or fiber.


(also dĕnyər) A unit of fineness for rayon, nylon, and silk fibers, based on a standard mass per length of 1 gram per 9,000 meters of yarn.


(also də-nîr) A small coin of varying composition and value current in western Europe from the eighth century until the French Revolution.


An old French coin worth one-twelfth of a sou.


A unit of linear density which indicates the fineness of fiber or yarn, equal to one gram per 9000 meters, used especially to measure or indicate the fineness of hosiery. Originally equal to the weight of a denier coin per 9600 aunes.


One who denies or forbids something.


One who denies the existence of something.
Holocaust denier
Global warming denier
AIDS denier


One who denies; as, a denier of a fact, or of the faith, or of Christ.


A small copper coin of insignificant value.
My dukedom to a beggarly denier.


A unit of measurement for the fineness of silk or nylon or rayon;
With an evening dress one wears 10 denier stockings


Any of various former European coins of different denominations


One who denies


Unit measuring fiber weight.
These stockings have a denier of 15, making them very fine.


What does tex measure?

Tex measures the thickness of a fiber by its weight in grams per 1,000 meters.

Which industries use tex?

Tex is commonly used in technical and industrial applications where precise measurements of fiber thickness are required.

Where is denier commonly used?

Denier is widely used in the fashion and textile industries, especially for products like hosiery and lightweight fabrics.

What does a lower denier number signify?

A lower denier number signifies a finer and lighter fiber.

Why is tex preferred in technical applications?

Tex provides a precise measurement of fiber thickness, essential for performance and durability.

How is denier defined?

Denier is defined by the weight of a fiber in grams per 9,000 meters.

Can tex and denier be converted?

Yes, 1 tex is approximately equal to 9 deniers.

Is tex used in consumer products?

Tex is less commonly used in consumer products, where denier is more prevalent.

What does a higher tex number indicate?

A higher tex number indicates a thicker, more durable fiber.

How does denier affect fabric feel?

Higher denier results in a heavier, more opaque fabric, while lower denier produces finer, more delicate materials.

How does tex impact textile manufacturing?

Tex helps manufacturers control the consistency and performance of industrial textiles.

What denier value is considered fine?

Lower denier values, like 10 denier, indicate finer fibers.

Why is denier important for hosiery?

Denier determines the sheerness and weight of hosiery, affecting its appearance and comfort.

Can denier be used for heavy-duty textiles?

While denier is mostly used for lighter fabrics, it can also apply to heavier textiles for specific applications.

How do you measure denier?

Denier is measured by weighing a 9,000-meter length of fiber.

Is tex or denier more precise?

Tex is generally more precise for technical applications.

What tex value is considered thick?

Higher tex values, such as 100 tex, indicate thicker fibers.

Which unit is more user-friendly for consumers?

Denier is more user-friendly for consumers, especially in the context of fashion and textiles.

What is the primary advantage of using denier?

Denier helps in assessing the fineness or coarseness of consumer fabrics, influencing the weight and texture.

How do you measure tex?

Tex is measured by weighing a 1,000-meter length of fiber.
About Author
Written by
Aimie Carlson
Aimie Carlson, holding a master's degree in English literature, is a fervent English language enthusiast. She lends her writing talents to Difference Wiki, a prominent website that specializes in comparisons, offering readers insightful analyses that both captivate and inform.
Co-written by
Harlon Moss
Harlon is a seasoned quality moderator and accomplished content writer for Difference Wiki. An alumnus of the prestigious University of California, he earned his degree in Computer Science. Leveraging his academic background, Harlon brings a meticulous and informed perspective to his work, ensuring content accuracy and excellence.

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