Embroidery Thread Calculator

Embroidery thread estimation tells you how much floss to buy before you start, which matters because running out of a colour halfway through is a genuinely bad afternoon. Work from the area you are covering, the stitch you are using, how many strands are in the needle, and how many colours the design calls for.

The mistake almost every thread estimate makes

A skein of DMC or Anchor floss is 8 metres (about 315 inches) of 6-strand floss. Nearly everybody stitches with 2 strands, which means you pull the bundle apart and get three working lengths out of every inch on the skein. So a skein does not give you 315 inches of stitching thread. It gives you roughly 945, of which about 85% survives the tail ends you cannot use.

Forget that step and your estimate comes out three times too high. It is the single reason you see people advised to buy forty skeins for a design that takes six.

The anchor number

One 8-metre skein covers roughly 1,500 full cross stitches on 14-count Aida with 2 strands. That figure is the long-standing craft convention, and it already builds in the waste from starting, ending and colour changes. Everything on this page is derived from it rather than from a separate stitch-length guess, so the numbers stay consistent with each other.

Stitches per square inch

Stitches per sq inch = Fabric Count²

• 14-count Aida: 14 × 14 = 196 cross stitches per square inch
• 18-count Aida: 18 × 18 = 324 stitches per square inch
• 28-count evenweave stitched over 2: works out the same as 14-count

Finer fabric cuts both ways, and not evenly. You get many more stitches per inch, but each one is smaller and takes proportionally less thread. Squaring beats dividing, so the net effect is that thread per square inch rises in step with the count: 18-count eats about 29% more floss per square inch than 14-count for the same solid coverage.

The cross-stitch option below assumes 14-count, which is what most designs are worked on. For any other count, use the cross stitch calculator, which takes the count directly and works from a stitch count rather than an area.

So, per square inch of solid cross stitch at 14-count, 2 strands:

196 ÷ 1,500 = about 0.13 skeins per square inch

Other stitch types

Satin stitch is the hungry one. It lays thread flat and solid across the surface with a matching return underneath, so almost none of the coverage is doing double duty the way a cross stitch’s shared holes do.

Strand count

Thread consumption scales directly with strands, because the needle travels the same path whichever way you thread it. Three strands instead of two is 50% more floss. Six strands is three times as much. That is worth knowing before you decide to stitch a whole background in full floss.

Worked example: A 4" × 6" cross-stitch design on 14-count Aida, 2 strands, 12 colours:

Area = 24 square inches Total stitches = 24 × 196 = 4,704 stitches Skeins of thread actually consumed = 4,704 ÷ 1,500 = 3.1 skeins

But you cannot buy 0.26 of a skein in twelve different colours. Spread across 12 colours that is a quarter-skein each, so you buy one skein per colour: 12 skeins. The thread you use is three skeins’ worth; the thread you buy is twelve. For a design with many colours the colour count drives the shopping list, not the area, and this calculator reports both numbers so you can see which one is binding.