Lea Count Explained: How Linen Yarn Is Measured

Lea is the traditional count for linen yarn. One lea is 300 yards of yarn, so the count is the number of 300-yard hanks it takes to make a pound: a higher number means a finer, lighter yarn, and a lower number a thicker, heavier one. To compare a lea against the metric count a mill may also quote, multiply it by 0.6048 to get Nm, so a 14 lea yarn is roughly Nm 8.5.

This guide is for a buyer reading a linen yarn or fabric specification and trying to work out what the count tells them. Linen is quoted in a unit most sourcing managers never meet on cotton goods, and the number on its own, without the system and the ply beside it, says very little.

What a lea actually is

A lea is a fixed length of yarn: 300 yards. The count tells you how many of those 300-yard hanks it takes to weigh one pound. So a 1 lea yarn is thick, a single hank filling a whole pound, while a 40 lea yarn is fine, taking forty hanks to reach the same pound.

Because the weight is fixed and the length varies, lea is an indirect count: the bigger the number, the finer and lighter the yarn. This is the same logic as cotton's Ne and the metric Nm, and the opposite of denier and dtex, where a bigger number is a heavier filament. If you remember one thing, remember that on linen a higher lea is a thinner thread.

Why linen is counted in lea and not Ne

The unit is a matter of history. Flax spinning grew up in Ireland, Scotland and the north of England, and the lea, also written NeL for English linen count, became the trade unit there. It stuck to the fibre. A cotton spinner quotes Ne, a worsted spinner quotes Nm, and a flax spinner quotes lea, to this day.

If a linen yarn is quoted to you in Nm or Ne instead, there is usually a reason: it is a blend yarn spun on cotton or worsted machinery, or the spinner is pricing it against a cotton equivalent. Knowing which system you are being given matters because the number is meaningless without it. A 14 in lea, a 14 in Ne and a 14 in Nm are three different yarns, and only one of them is linen's own.

Reading the number: coarse, medium and fine

The count maps loosely onto end use. These bands are general trade conventions, not fixed rules, and a given mill will place the edges slightly differently, but they tell you what a number is reaching for.

Lea	Nm (approx)	Character	Typical use
1 to 8	0.6 to 4.8	Thick, rustic, very durable	Heavy upholstery, canvas, coarse crash, heavy table linen
8 to 25	4.8 to 15	Medium, the workhorse range	Bed linen, apparel-weight cloth, tea towels, medium table linen
25 to 60	15 to 36	Fine, smooth, lighter hand	Fine shirting, handkerchief linen, fine damask, lightweight sheeting
60 and above	36 and above	Very fine, specialist	Cambric and lace-weight cloth, mostly historical

Finer is not better, it is different. A coarse 6 lea makes exactly the right heavy, textured upholstery cloth, and spinning that product in a 40 lea would be pointless and far more expensive. The question is never which count is highest but which count suits the cloth you are building.

Ply travels with the count

Linen yarn is often plied, and the ply has to travel with the count or the figure is incomplete. A notation such as 2/14 lea means two 14 lea singles twisted together. The resultant yarn weighs roughly what a 7 lea single would, but it is stronger, rounder and more even than a single at that weight, which is why plied yarns are common in warps and in anything that takes abrasion.

A bare 14 lea, with no ply stated, is as open to misreading as a bare thread count. Ask whether the figure is the singles count or the resultant, and whether the yarn is one, two or more ply. This is the same discipline that protects you on cotton sheeting, where counting a two-ply yarn as two threads inflates the headline number. The reasoning is set out in the guide on GSM, thread count and yarn count.

Converting between the systems

When a specification mixes units, or you are comparing a linen yarn against a cotton one, convert everything to one system first. The lea to metric conversion is fixed:

Nm = lea x 0.6048

Cotton count follows from it, because Ne is Nm divided by 1.6934, which works out to roughly lea x 0.357.

Lea	Nm	Ne (cotton equivalent)
5	3.0	1.8
8	4.8	2.9
14	8.5	5.0
25	15.1	8.9
40	24.2	14.3
60	36.3	21.4

So a 40 lea linen is about as fine as a Ne 14 cotton, which is far coarser than the Ne 40 or Ne 60 a fine cotton percale is spun from. Linen rarely spins to the very fine counts cotton reaches, because the fibre is less uniform, and the finest linen counts need wet spinning rather than dry spinning to get there. That is why linen cloth tends to sit heavier than a cotton of similar visual fineness, and part of why it costs more to weave.

How a buyer actually uses the count

For finished linen cloth, lead with the weight. Linen is specified by GSM rather than thread count, and the lea is the input that lets a mill hit that weight with the hand you want. Coarse yarn taken to a light weight gives an open, loose cloth; fine yarn taken to a heavy weight gives a dense, closed one. The same GSM in two different counts is two different fabrics.

So a clean linen specification names the lea with its ply and its system, sets the finished GSM with a tolerance, names the weave, and then gets confirmed against a physical sample before bulk. The count on paper tells you the intent; a swatch woven to it, weighed and handled, tells you the result.

H & J Exim works in pure linen and in linen-cotton blends, with counter samples woven to an agreed specification in about a week, so a buyer can check the yarn and the weight in hand rather than trusting a number. Where the yarn origin matters to the cloth as much as the count, see where linen yarn comes from, and for terms, minimums and sampling see private label.

Common questions

Is a higher lea count always better?

No. A higher lea is a finer, lighter yarn, which suits fine shirting or lightweight sheeting, but a coarse low count is exactly right for heavy upholstery, canvas and rustic table linen. Match the count to the product rather than reaching for the highest number, and remember that very fine linen counts cost disproportionately more to spin.

How do I convert lea to Nm?

Multiply the lea by 0.6048. A 14 lea yarn is Nm 8.5, a 25 lea is Nm 15.1, and a 40 lea is Nm 24.2. To reach the cotton count Ne, divide the Nm by 1.6934, which is roughly the lea multiplied by 0.357.

Should I specify lea or GSM for linen cloth?

Both, and lead with GSM. Weight is the honest control for finished linen because it is measured by weighing, while the lea tells the mill which yarn to use to reach that weight with the hand you want. Name the yarn count, its ply and the system, then lock the GSM against a sample.

What does 2/14 lea mean?

Two 14 lea singles twisted together into one plied yarn. It weighs about what a 7 lea single would but is stronger, rounder and more even, which is why plied yarns are used in warps and in cloth that takes wear. Always ask whether a stated count is the singles or the resultant.