An article teaches you to understand Yarn count and fabric density

zoe zhu
2025-04-27

Yarn count

In layman’s terms, yarn count is a unit used to measure the thickness of yarn. Common yarn counts are 30, 40, and 60. A larger number means a finer yarn. This results in a smoother wool texture and a higher grade. But there is no necessary relationship between fabric count and fabric quality. Fabrics with counts greater than 100 can be called “super.” Count applies more to worsted fabrics but means little for woolen fabrics. For example, woolen fabrics such as Harris Tweed have very low counts.

High count

High count and high density generally represent the texture of pure cotton fabrics. “High count” refers to a very fine yarn count in fabric. Examples include cotton yarns like JC60S, JC80S, JC100S, JC120S, JC160S, and JC260S. In British yarn count, a larger number means a finer yarn. In the production process, a higher yarn count means longer cotton lint is used for spinning. This includes types like “long-staple cotton” or “Egyptian long-staple cotton.” Such yarns are uniform in length, highly flexible, and have good luster.

High density

In each square inch of fabric, the warp yarn is called warp yarn, and the weft yarn is called weft yarn. The sum of the number of warp yarns and the number of weft yarns is the density of the fabric. “High density” means the fabric has a lot of warp and weft yarns. This means many yarns fit in a small area. For example, there can be 300, 400, 600, 1,000, or even 12,000 yarns per square inch. More yarns mean a denser fabric.

High-count and high-density fabrics have very fine yarns. Such fabrics will feel very soft and have good glossiness. These cotton fabrics feel as smooth as silk. They are more delicate and skin-friendly. Plus, they perform better than regular fabrics with common yarn counts and densities.

Plain weave fabric

The warp and weft yarns are interwoven once every other yarn. Such fabrics are called plain weave fabrics. The fabric has many interweaving points. It feels crisp and looks the same on both sides. It’s light and thin, allowing good airflow. The count is around 30, and it’s also affordable.

Twill fabric

The warp and weft yarns are interwoven at least once every two yarns. You can change the fabric structure by adjusting where the warp and weft cross. They are collectively called twill fabrics. The features are a clear front and back, fewer cross points, and longer floating lines. They feel soft and have a higher fabric density. The products are thicker and have a stronger three-dimensional quality. The counts vary from 30, 40 to 60.

Color count

Dyed weaving means dyeing the yarn before weaving. Instead of making white cloth first and then printing or dyeing it, the yarn gets its color ahead of time. The dyed fabric has a uniform color with no differences. Its color fastness is good, so it won’t fade easily.

Jacquard fabric

It means using changes in warp and weft to make patterns in fabric weaving. This is not the same as “printing” or “embroidery.” Jacquard fabrics need a fine yarn count and high-quality raw cotton.