Heel Turn Calculator
Enter your heel stitch count and get the full row-by-row short-row turn, generated for that exact number — instead of hunting for a pattern that happens to use the same heel width you do.
How to Turn a Heel ↓Small Needles, Sore Fingers?
Turning a heel on small sock needles can be tough on your hands — adjustable knitting thimbles help control tension without cramping your grip.
The mechanism behind every short-row heel turn
Regardless of exact named variant, a short-row heel turn always works the same way: knit or purl across to one stitch past wherever the previous row turned, work a decrease that consumes exactly one stitch from the side you haven't touched yet, then turn and repeat in the other direction — one stitch further each time. This calculator generates the classic version of that pattern (sometimes called the standard or German short-row heel), which starts with a setup row and then increases the plain-stitch count by one every row until every heel stitch has been consumed by either a plain stitch or a decrease.
Why the final stitch count is always about heel stitches ÷ 2, plus 2
Every stitch in the heel gets accounted for exactly once during the turn: either worked as a plain stitch, or paired into one of the decreases. Because the process always starts from the center and works outward symmetrically, it always finishes with half the original heel stitches (rounded up, if you started with an odd number) plus 2 remaining live on the needle — that's not a coincidence specific to any one heel size, it falls out of the mechanism itself, which is why this calculator can tell you that number before you've worked a single row.
What changes with an odd stitch count
With an odd number of heel stitches, the two sides of the turn can't split perfectly evenly around the center — one side ends up with exactly one more stitch than the other. This calculator handles that automatically by centering on the lower of the two nearest whole numbers, which produces a turn that's off-center by a single stitch rather than a full row. That one-stitch offset is normal, doesn't affect how the heel fits, and is exactly how many patterns already handle an odd-numbered heel flap (eye of partridge stitch, for instance, is worked over an odd stitch count specifically for its texture).
Other heel styles exist
This generates the classic short-row heel turn, which is the most commonly taught version and works well for a huge range of patterns, but it isn't the only heel style in use — a Fleegle heel, an afterthought heel, or a heel worked with wrap-and-turn short rows instead of slipped-stitch decreases will each have their own row-by-row instructions that differ from this one, even though the underlying goal (turning 90 degrees around the heel) is the same. If your pattern specifies a named heel style other than a classic/German short-row heel, follow its own instructions rather than substituting this one.
How to Turn a Heel, Step by Step
Turning a heel is the point where a sock stops being a tube and becomes foot-shaped, and it is the step that intimidates most first-time sock knitters. It shouldn't. A heel turn is a handful of short rows worked to a rule you can hold in your head, and once you have done one you can do every size without a pattern. These instructions cover the classic short-row heel turn worked after a heel flap, in US knitting terms.
Before you start
You should have your heel flap finished, with all the heel stitches on one needle and the instep stitches resting. Roughly half your total sock stitches are heel stitches. The calculator above will tell you the counts for your specific sock; what follows is the sequence you actually work.
The rule the whole thing runs on
You are going to knit partway across the row, decrease, and turn around before reaching the end — leaving stitches unworked on both sides. Each pass consumes one more of those waiting stitches. The heel cup forms because the middle of the fabric gets more rows than the edges do. That's it. Everything below is that idea repeated.
The four rows
| Row | What you work |
|---|---|
| 1 (right side) | Slip 1, knit until you are 2 stitches past the center of the heel, ssk, k1, turn. |
| 2 (wrong side) | Slip 1, purl until you are 2 stitches past the center, p2tog, p1, turn. |
| 3 | Slip 1, knit to 1 stitch before the gap, ssk to close the gap, k1, turn. |
| 4 | Slip 1, purl to 1 stitch before the gap, p2tog to close the gap, p1, turn. |
Repeat rows 3 and 4 until every stitch has been worked. Rows 1 and 2 create the first two gaps; rows 3 and 4 are the engine, and they never change no matter how many stitches you have.
Finding the gap
This is the part written instructions handle badly, so look at your knitting rather than the page. After you turn, there is a visible ladder-like space where the previous row stopped and turned — a small horizontal gap between two stitches, with the worked stitches on one side and the untouched ones on the other. Your decrease always eats one stitch from each side of that gap, which is what closes it.
If you cannot see it, run your finger along the needle: the gap sits exactly where the fabric changes from "has an extra row" to "doesn't."
The last two rows
Near the end you will run out of room for the final k1 or p1 after the decrease. That's expected — simply work the decrease and turn without it. Some patterns are written to end with a full stitch and some aren't, and either produces a perfectly good heel. Don't add a stitch that isn't there to make the instruction come out even.
When every stitch has been worked, you should have roughly half your heel stitches plus two remaining on the needle. Compare that to the calculator; if you are off by one or two, you have most likely missed a gap somewhere, which is cosmetic rather than fatal.
Troubleshooting
| Problem | Cause and fix |
|---|---|
| Holes along the heel turn | The decrease didn't span the gap — you worked one stitch too early or too late. Next time, count to one stitch before the gap, then decrease those two together. |
| Lost track of where the gap is | Drop a removable stitch marker at each turning point as you go. Costs seconds, saves rows. |
| Heel looks lopsided | Row 1 wasn't centered. It must run to 2 stitches past the middle, not 2 past wherever you happened to stop. |
| Ended with the wrong stitch count | Usually a missed gap, meaning one row closed nothing. The sock will still fit; adjust on the gusset pickup. |
| Slipped stitches look loose | Normal. They tighten when you pick up gusset stitches along the flap edge. |
What happens next
With the heel turned, you pick up stitches along both sides of the heel flap, rejoin the instep stitches, and decrease the gusset back down to your original stitch count. The sock size calculator covers the foot length you're aiming for, and the toe decrease calculator handles the other end.