Does thread count matter? What it means and what matters more

Thread count matters less than most people think. It measures how many threads are woven into one square inch of fabric, and within a sensible range it says something about density, but the quality of the fibre, the weave and the finishing have a bigger effect on how a sheet feels and lasts. Very high counts are often reached by counting threads in a way that inflates the number.

What is thread count?

Thread count is the total number of lengthwise (warp) and crosswise (weft) threads in one square inch of fabric. A fabric with 150 warp threads and 150 weft threads per square inch has a thread count of 300.

In France and some other European countries, density is often given per square centimetre instead. For example, 57 threads per cm² is roughly 368 per square inch. Some labels give no count at all, so numbers are not always comparable from one country or label to the next.

Plies and inflated thread counts

A ply is a single strand of yarn. Two ply yarn is two strands twisted together into one thread. Some manufacturers count each strand separately, so a sheet with 300 two ply threads per square inch can be labelled as 600, or more. The fabric is no denser; the number has simply doubled.

Very fine single ply yarns do allow genuinely higher counts, but there is a physical limit to how many threads fit into a square inch. When you see counts of 1000 or more, check the label for single ply yarn and look for an explanation of how the number was calculated.

What matters more than thread count

What is a sensible thread count?

As typical guidance, most good quality cotton sheets fall somewhere between 200 and 400:

• Percale: commonly 200 to 400. Very high counts in a plain weave can feel stiffer and less airy.
• Sateen: commonly 300 to 600, as the satin weave packs threads more closely.
• Linen: often not quoted at all, because linen yarns are thicker. Low counts are normal for linen and do not mean lower quality.

Within those ranges, a well made 250 count sheet from good cotton can feel better than a 1000 count sheet made from short, multi ply yarns.

What thread count do hotels use?

Hotel pillow descriptions rarely mention it. In our review of pillows at 42 hotels, only 5 of the 102 pillows we looked at stated a thread count for the shell, ranging from 230 to 400 with a median of 240. Fibre and weave came up far more often: 35 of the 37 stated shell fabrics were cotton, and percale was the most commonly named weave. In other words, fibre and weave are what hotels themselves choose to describe.

How to judge sheets without relying on the number

1. Read the fibre content. 100% cotton or linen tells you more than the count.
2. Check the weave. Percale and sateen feel very different at the same count. Our guide to percale vs sateen explains how.
3. Look for single ply yarn and combed or long staple cotton on the label.
4. Hold the fabric up to the light. It should look even, without thin patches.
5. Check the care instructions. Sheets you can wash warm and tumble dry are easier to live with.

Good sheets also feel better when the bed is made well. See how to make your bed like a hotel for the steps, and how to sleep cooler if warmth is your main concern.