# Yarn Count Conversion Worksheet: Ne to Tex, Nm and Denier

> Source: https://netray.co/tools/yarn-count-conversion-worksheet-ne-tex-nm-denier
> Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems.
> Section: Free Tools

## Short answer

Enter cotton counts (Ne) and get Tex, dtex, Nm and denier for each row, ready to export for purchase orders and BOMs.

## Category

industry-templates

## Industry

Textile & Apparel

## Audience

- Textile buyer
- Spinning mill planner
- Knitting manager
- Plant manager

## Tool

**Kind:** worksheet

**Mode:** editable

**Columns:**

#### Yarn / use

**Key:** item

**Type:** text

#### Cotton count Ne

**Key:** ne

**Type:** number

**Help:** English cotton count, hanks of 840 yards per pound.

#### Tex (g per 1000 m)

**Key:** tex

**Type:** number

**Expr:** 590.5 / ne

**Format:** decimal

#### dtex

**Key:** dtex

**Type:** number

**Expr:** 5905 / ne

**Format:** decimal

#### Metric count Nm

**Key:** nm

**Type:** number

**Expr:** ne * 1000 / 590.5

**Format:** decimal

#### Denier (g per 9000 m)

**Key:** den

**Type:** number

**Expr:** 5314.5 / ne

**Format:** decimal

#### Quantity (kg)

**Key:** lot_kg

**Type:** number

#### Length (km)

**Key:** meters_km

**Type:** number

**Expr:** lot_kg * 1000 / (590.5 / ne)

**Format:** number

**Help:** Yarn length in kilometers: kg x 1000 / tex.

**Rows:**

**Item:** Combed knitting yarn

**Ne:** 30

**Lot kg:** 2000

**Item:** Carded weft yarn

**Ne:** 20

**Lot kg:** 5000

**Item:** Fine shirting warp

**Ne:** 60

**Lot kg:** 800

**Item:** Heavy denim weft

**Ne:** 10

**Lot kg:** 6000

**Item:** Fine voile yarn

**Ne:** 80

**Lot kg:** 300

**Totals:**

#### Total quantity (kg)

**Key:** lot_kg

**Agg:** sum

**Format:** number

#### Total length (km)

**Key:** meters_km

**Agg:** sum

**Format:** number

**Notes:** Conversions assume the standard cotton count: Tex = 590.5 / Ne, with Nm = 1000 / Tex and denier = 9 x Tex. Other systems (worsted, linen, woolen) use different constants. Check the count system before ordering.

## Content

**Intro:** Yarn is sold in different count systems depending on the fiber and the country, which makes purchase orders, BOMs and supplier quotes hard to compare. This worksheet converts English cotton count (Ne) into Tex, dtex, Nm and denier, and gives yarn length for the weight you buy.

**Sections:**

#### How to use it

**Body:** Type each yarn on a row, enter the Ne count and the quantity in kilograms, and the other systems are calculated automatically. Add rows for each yarn on your BOM, then export to Excel or PDF for a purchase order or tech pack. Overwrite the example rows with your own counts.

**Bullets:**

- Ne and Nm are indirect systems: higher number means finer yarn
- Tex and denier are direct systems: higher number means heavier yarn
- Ply yarns need the resultant count, so check the supplier's convention

#### The conversions

**Body:** Tex is grams per 1000 meters. For cotton counts, Tex = 590.5 / Ne. Nm is meters per gram, so Nm = 1000 / Tex. Denier is grams per 9000 meters, so Denier = 9 x Tex, and dtex is 10 x Tex. Yarn length in kilometers equals kilograms x 1000 / Tex, which is useful when you convert a purchase quantity into knitted or woven length.

#### Reading the result

**Body:** A 30 Ne yarn is about 19.7 Tex, roughly 50.8 Nm and about 177 denier. Doubling the Ne halves the Tex. Use the length column to compare supplier quotes per kilogram on yarns of different counts: a finer yarn gives more kilometers per kilogram, so a higher price per kilogram can still be the same cost per kilometer.

#### Common mistakes

**Body:** The most frequent mistake is mixing indirect and direct systems, for example expecting a higher Nm to mean a heavier yarn. Others apply the cotton constant to worsted or linen counts, which use other base lengths. Also check whether denier refers to filament yarn, and whether the quoted count is single or plied before conversion.

**Cta:** If yarn items and specifications are stored in your ERP with inconsistent units, we can build a read-only assistant that normalizes counts across suppliers and flags BOM mismatches.

**Faq:**

#### What is the formula to convert Ne to Tex?

**Answer:** For English cotton count the formula is Tex = 590.5 / Ne. For example 20 Ne is 29.5 Tex. Tex is the grams of yarn per 1000 meters, so a heavier yarn has a higher Tex and a lower Ne.

#### How do I convert Ne to Nm?

**Answer:** Divide 1000 by the Tex, or multiply Ne by about 1.6934. For example 30 Ne is about 50.8 Nm. Nm counts the meters in one gram, so a higher Nm is a finer yarn.

#### Does this work for polyester or viscose?

**Answer:** Counts are fiber independent once expressed in Tex or denier. If the supplier quotes polyester in denier, enter the Ne equivalent or use the formula backwards. The cotton constant only applies if the count is given as Ne.

#### How is yarn length calculated?

**Answer:** Length in meters is weight in grams divided by Tex, times 1000. In this sheet the length column is shown in kilometers for a quantity in kilograms. It does not include waste, so keep an allowance when you plan production.

## Search terms

yarn count conversion table, Ne to Tex conversion, Ne to Nm converter, Ne to denier converter, cotton count to tex formula, yarn count converter excel, tex to denier, english cotton count conversion

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