Reed count is one of the quiet decisions that shapes a woven fabric — its set, its cover and how the warp behaves on the loom. This guide explains what reed count is, how to calculate it, and how it ties into ends per inch and your overall construction.
What the reed does
The reed is the comb-like part of the loom that spaces the warp ends and beats each pick into place. Its gaps are called dents, and reed count is the number of dents per inch. The warp ends are drawn through these dents — usually two or more ends per dent.
Calculating reed count
Reed count follows directly from your ends per inch (EPI) and how many ends you draw through each dent:
- Reed count (dents/inch) = EPI ÷ ends per dent
- Total dents = reed count × reed width (inches)
For 60 EPI drawn 2 ends per dent, the reed count is 30 dents/inch; across a 56-inch reed that is 1,680 dents. Our Reed Count Calculator works it out instantly, including the total dents across width.
How reed count shapes the fabric
Ends per dent affect cover and appearance: too many ends crowded into one dent can leave reed marks, while spreading ends gives a smoother, more even cloth. Reed count, EPI and PPI together set the fabric’s firmness and weight — which in turn drives GSM and hand-feel.
Tip: keep your units straight
Loom and reed specs mix inches, centimetres and metres freely. When you are converting widths and lengths between systems, our Length Unit Converter saves errors.
From construction to cloth
Reed count is one input in a connected chain: yarn count and strength, EPI and PPI, reed and weave all combine into the finished fabric. Get the construction right on paper and the loom rewards you with fewer breaks and a fabric that meets spec.
Planning a woven fabric? We supply warp and weft yarn and greige to finished cloth.
See the reed count calculator and more on our buyer tools page.