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Convert Tex to Pounds per Inch

Instantly convert Tex (tex) to Pounds per Inch (lb/in) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: tex to lb/inmultiply by 5.5997e-8

Reference Table

Tex (tex)Pounds per Inch (lb/in)
15.599731e-8
52.799866e-7
105.599731e-7
250.00000139993
500.00000279987
1000.00000559973

How to Convert Tex to Pounds per Inch

Formula

To convert Tex (tex) to Pounds per Inch (lb/in): multiply by 5.5997e-8

Step-by-Step

  1. Start with your value in Tex (tex).
  2. Multiply by 5.5997e-8 to perform the conversion.
  3. The result is your value expressed in Pounds per Inch (lb/in).

Conversion Factor

1 tex = 5.599731e-8 lb/in

Reverse Factor

1 lb/in = 17858000 tex

Worked Example

Convert 25 Tex to Pounds per Inch: 25 tex = 0.00000139993 lb/in

About Tex (tex)

A textile-industry linear-density unit equal to exactly grams per 1,000 meters of fiber or yarn (= 10⁻⁶ kg/m = 1 mg/m). Tex is the ISO-standard fiber-fineness unit worldwide per ISO 2060 'Yarn from Packages — Determination of Linear Density (Mass per Unit Length)'. Used universally in: tire-cord industry per ASTM D885 (polyester tire cord 1,100-1,650 tex; rayon cord 1,840-2,750 tex; aramid/Kevlar cord 1,580-2,840 tex; steel-wire tire-belt 4,400 tex), industrial belting and conveyor-belt reinforcement fabrics, carpet and rug yarn (Berber loop-pile typical 2,000-5,000 tex; nylon BCF 1,400 tex), sewing-thread and embroidery-thread specifications, polypropylene woven slings for material handling, and continuous-filament-yarn (CFY) manufacturing. Direct measurement principle: weigh 1,000 m of the fiber under standardized 20 °C / 65% RH atmosphere per ISO 139, heavier fiber = higher tex. Convert tex to g/km (numerically identical); to denier by multiplying by 9; to kg/m by dividing by 10⁶.

About Pound per Inch (lb/in)

An imperial linear-density unit equal to exactly 12 × lb/ft (≈ 17.858 kg/m per NIST SP 811). lb/in is used occasionally in US engineering for small-cross-section components where lb/ft would produce small decimal values: small US-manufactured precision-machined wire (round bar stock from McMaster-Carr / MSC Industrial Supply lists weight-per-inch for small diameters), specialty tooling (broaches, taps, drills, gun-barrel stock), small structural sections in MIL-SPEC aerospace and defense applications (MIL-STD-1539 microelectronics-package mass-spec sheets, occasional small-airframe spar-cap weight-per-inch in legacy aircraft drawings), and some pre-1980s machine-shop reference tables. 1 lb/in = 12 lb/ft ≈ 17.86 kg/m. Much less common than lb/ft in everyday US structural engineering but persists in specialty tooling, fastener-stock, and small-arms ammunition projectile-weight specifications.

Quick Facts

  • 1 Tex equals 5.599731e-8 Pounds per Inch
  • 1 Pound per Inch equals 17858000 Tex
  • Tex is a unit of linear density
  • Pound per Inch is a unit of linear density
  • This conversion is commonly used in textile manufacturing, cable engineering, and structural analysis
  • The Pound per Inch belongs to the imperial system

Common Tex to Pound per Inch Conversions

Tex (tex)Pounds per Inch (lb/in)
0.015.599731e-10
0.15.599731e-9
0.251.399933e-8
0.52.799866e-8
15.599731e-8
21.119946e-7
31.679919e-7
52.799866e-7
105.599731e-7
158.399597e-7
200.00000111995
250.00000139993
500.00000279987
750.0000041998
1000.00000559973
2500.0000139993
5000.0000279987
10000.0000559973
50000.000279987
100000.000559973

Understanding Tex

The Tex (symbol: tex) is a unit of linear density. A textile-industry linear-density unit equal to exactly grams per 1,000 meters of fiber or yarn (= 10⁻⁶ kg/m = 1 mg/m). Tex is the ISO-standard fiber-fineness unit worldwide per ISO 2060 'Yarn from Packages — Determination of Linear Density (Mass per Unit Length)'. Used universally in: tire-cord industry per ASTM D885 (polyester tire cord 1,100-1,650 tex; rayon cord 1,840-2,750 tex; aramid/Kevlar cord 1,580-2,840 tex; steel-wire tire-belt 4,400 tex), industrial belting and conveyor-belt reinforcement fabrics, carpet and rug yarn (Berber loop-pile typical 2,000-5,000 tex; nylon BCF 1,400 tex), sewing-thread and embroidery-thread specifications, polypropylene woven slings for material handling, and continuous-filament-yarn (CFY) manufacturing. Direct measurement principle: weigh 1,000 m of the fiber under standardized 20 °C / 65% RH atmosphere per ISO 139, heavier fiber = higher tex. Convert tex to g/km (numerically identical); to denier by multiplying by 9; to kg/m by dividing by 10⁶.

Tex are commonly used in textile manufacturing, cable engineering, and structural analysis.

Understanding Pounds per Inch

The Pound per Inch (symbol: lb/in) is a unit of linear density. An imperial linear-density unit equal to exactly 12 × lb/ft (≈ 17.858 kg/m per NIST SP 811). lb/in is used occasionally in US engineering for small-cross-section components where lb/ft would produce small decimal values: small US-manufactured precision-machined wire (round bar stock from McMaster-Carr / MSC Industrial Supply lists weight-per-inch for small diameters), specialty tooling (broaches, taps, drills, gun-barrel stock), small structural sections in MIL-SPEC aerospace and defense applications (MIL-STD-1539 microelectronics-package mass-spec sheets, occasional small-airframe spar-cap weight-per-inch in legacy aircraft drawings), and some pre-1980s machine-shop reference tables. 1 lb/in = 12 lb/ft ≈ 17.86 kg/m. Much less common than lb/ft in everyday US structural engineering but persists in specialty tooling, fastener-stock, and small-arms ammunition projectile-weight specifications.

It belongs to the imperial measurement system.

Pounds per Inch are commonly used in textile manufacturing, cable engineering, and structural analysis.

Why Convert Tex to Pounds per Inch?

Converting between Tex and Pounds per Inch is a frequent requirement for engineers, scientists, and students working with linear density values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate linear density conversion is essential.

Frequently Asked Questions

How do I convert Tex to Pounds per Inch?

A textile-industry linear-density unit equal to exactly grams per 1,000 meters of fiber or yarn (= 10⁻⁶ kg/m = 1 mg/m). To convert Tex to Pounds per Inch, multiply by 5.5997e-8. For example, 25 tex equals 0.00000139993 lb/in.

How many Pounds per Inch are in 1 Tex?

There are 5.599731e-8 Pounds per Inch in 1 Tex.

How many Tex are in 1 Pound per Inch?

There are 17858000 Tex in 1 Pound per Inch.

What is the formula for Tex to Pound per Inch conversion?

The formula is: multiply by 5.5997e-8. This means 1 tex = 5.599731e-8 lb/in.

Is a Tex bigger than a Pound per Inch?

Yes. One Tex is larger than one Pound per Inch because 1 tex equals 5.599731e-8 lb/in, which is less than 1.

When do you need to convert between Tex and Pounds per Inch?

An imperial linear-density unit equal to exactly 12 × lb/ft (≈ 17. Tex and Pound per Inch are both linear density units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.

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