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Specific direct to direct conversion formulas Calculation: Resultant Denier = Count of single ply
× Number of plies Resultant Denier = 30 Denier × 3
Here are the most commonly used conversion formulas:
Resultant Denier = 90 Denier
1 Tex to Denier and vice versa
Result: The 3-ply yarn has a resultant count of 90 Denier.
- Denier = Tex × 9 (Since Denier is g/9000m and Tex Conversion from indirect to direct system
is g/1000m, Denier’s reference length is 9 times
that of Tex) Converting from an indirect to a direct system means
you’re changing from a system where a higher number
- Tex = Denier / 9
indicates a finer yarn (e.g., Ne) to a system where a
2 Tex to Decitex and vice versa higher number indicates a coarser yarn (e.g., Tex or
- Decitex = Tex × 10 (Since Decitex is g/10000m Denier). Therefore, the conversion formulas typically
and Tex is g/1000m, Decitex’s reference length is involve an inverse relationship.
10 times that of Tex) Some common conversions with examples:

- Tex = Decitex / 10 1 English cotton count (Ne) to tex
3 Denier to Decitex and vice versa: • English cotton count (Ne): Number of hanks
- Decitex = Denier / 0.9 (or Denier×910) (each 840 yards long) per pound (lb) of yarn.
- Denier = Decitex × 0.9 (or Decitex×109) • Tex: Weight in grams of 1000 meters (1 kilometer)
of yarn.
Examples of direct to direct conversions
Conversion formula
Example 1: Tex to Denier
Tex=Ne590.5
Scenario: You have a synthetic yarn with a count of 50
Tex. What is its count in Denier? Explanation

Formula: Denier = Tex × 9 • We know that 1 pound (lb) = 453.592 grams.
Calculation: Denier = 50 × 9 Denier = 450 • We know that 1 hank (840 yards) = 840 * 0.9144
meters = 768.096 meters.
Result: A 50 Tex yarn is 450 Denier.
• If you have ‘Ne’ hanks in 1 lb, then ‘Ne’ hanks weigh
Example 2: Denier to Tex 453.592 grams.
Scenario: A hosiery manufacturer specifies a yarn of 75 • The total length of ‘Ne’ hanks is Ne×768.096 meters.
Denier. What is this in Tex?
• Tex is grams per 1000 meters. So,
Formula: Tex = Denier / 9 Tex=Length in metersWeight in grams×1000
Calculation: Tex = 75 / 9 Tex ≈ 8.33 Tex=Ne×768.096453.592×1000 Tex≈Ne590.5
Result: A 75 Denier yarn is approximately 8.33 Tex. Example

Example 3: Tex to Decitex Convert 30 Ne cotton yarn to Tex.
Scenario: A new fiber is being developed with a target Using the formula:
count of 2.5 Tex. What would this be in Decitex? Tex=30590.5

Formula: Decitex = Tex × 10 Tex≈19.68
Calculation: Decitex = 2.5 × 10 Decitex = 25 So, a 30 Ne yarn is approximately 19.68 Tex. This makes
Result: A 2.5 Tex yarn is 25 Decitex. sense: 30 Ne is a relatively fine yarn (high indirect count),
and 19.68 Tex is also a relatively fine yarn (low direct
Example 4: Decitex to Denier count).

Scenario: You receive a sample of yarn marked 110 2 English cotton count (Ne) to denier
Decitex. You need to know its Denier count.
• Denier: Weight in grams of 9000 meters of yarn.
Formula: Denier = Decitex × 0.9
Conversion Formula:
Calculation: Denier = 110 × 0.9 Denier = 99
Denier=Ne5315
Result: A 110 Decitex yarn is 99 Denier.
Explanation
Example 5: Plied Yarn in Direct System
• Since Denier is grams per 9000 meters, it’s 9 times
Scenario: You have a 3-ply yarn, where each single ply the Tex value. Denier=Tex×9 Denier=Ne590.5×9
has a count of 30 Denier. What is the resultant count of Denier≈Ne5314.5, often rounded to Ne5315.
the plied yarn?

Textile & Handloom: Shawl Weaving Artisan : (NSQF - 2024) R.T. Ex.No 1.4.36&37 61