You can knit in the round with straight needles by working back and forth in short rows, then grafting the seam closed at the end

Knitting in the round on straight needles is slower than using circular needles or double-pointed needles, but it works well for small projects or when you don't have the right circular needle size. The method relies on short-row shaping—you knit flat in rows, but you turn your work strategically so the edges meet up when you graft them together. The result looks like a seamless tube, even though you knitted it flat.

This technique is practical for knitting small hats, sleeves, or the body of a sweater when your circular needle is too large or you prefer working with needles you already own. The main trade-off is that you'll spend time grafting the seam at the end, and you need to be comfortable with Kitchener stitch (also called grafting) to close the tube invisibly.

Key Takeaways

  • Knit your piece flat in rows, decreasing stitches at the sides to create a tube shape that will close when grafted.
  • Work increases or decreases at the beginning and end of each row to taper the fabric so the edges meet without bunching.
  • Kitchener stitch (grafting) closes the seam invisibly by threading live stitches from both edges together with a tapestry needle.
  • This method works best for projects under 40 stitches wide, where straight needles stay manageable and the seam is short enough to graft easily.
  • Practice grafting on a scrap piece first—the seam quality determines whether your finished project looks handmade or homemade.

Measure and cast on for a tube shape

Start by deciding the finished circumference of your project. If you're knitting a hat that should measure 18 inches around, you'll cast on enough stitches to knit a flat piece that is 18 inches wide. Use your gauge swatch to calculate: if your gauge is 5 stitches per inch, cast on 90 stitches (18 × 5).

Cast on using your preferred method—long-tail or cable cast-on both work. The cast-on edge will become one seam edge, so keep it neat. If you're a loose caster-on, go down a needle size for the cast-on row, then switch back to your working size for row 1. This prevents the seam from being looser than the rest of the fabric.

Decrease at both edges to taper the fabric

On row 1, knit across. On row 2, purl across (or knit if you're working garter stitch). Starting on row 3, decrease one stitch at the beginning and one stitch at the end of every row, or every other row, depending on how quickly you want the tube to taper.

For a hat, decrease every row: slip 1, knit 1, pass the slipped stitch over (ssk) at the start, knit to the last 2 stitches, then knit 2 together (k2tog) at the end. This removes 2 stitches per row. After 20 rows of decreasing, you'll have gone from 90 stitches down to 50. Keep decreasing until you have roughly half your original stitch count—this is where the tube will close.

If you decrease every other row instead, the taper is gentler and the finished tube sits flatter when grafted. Choose based on the shape you want: steep decreases create a cone (good for hat crowns), gentle decreases create a cylinder (good for sleeves).

Bind off and prepare for grafting

When you've decreased to your target stitch count, bind off loosely on the next row. Use a bind-off that matches your yarn weight—for fingering weight, a standard bind-off is fine; for bulky yarn, consider a stretchy bind-off so the edge doesn't pucker. Bind off knitwise (or purlwise, depending on which side is facing you) and cut your yarn, leaving a 6-inch tail.

Now you have a flat piece with two edges: the cast-on edge at the bottom and the bind-off edge at the top. These two edges will be grafted together to close the tube. Before you graft, lay the piece flat and make sure the edges line up. If one edge is significantly tighter or looser, the seam will look uneven.

Thread the tapestry needle and set up for Kitchener stitch

Cut a length of yarn about 18 inches long (or longer if your seam is wide). Thread it onto a tapestry needle. Kitchener stitch works by threading through live stitches on both edges, mimicking the path a knit stitch would take if you were knitting the two edges together.

Fold your piece so the cast-on and bind-off edges meet, with the right sides facing out. Insert the tapestry needle through the first stitch on the cast-on edge from front to back (as if you were purling), then through the first stitch on the bind-off edge from back to front (as if you were knitting). Pull the yarn snug but not tight—tight grafting will pucker the seam.

The pattern repeats: go through the next stitch on the cast-on edge from back to front, then through the next stitch on the bind-off edge from front to back. Continue this rhythm, dropping each stitch off the needle as you pass through it. The seam should look like a row of knit stitches running between the two edges.

Common mistakes and how to avoid them

Grafting too tightly is the most common error. If you pull hard on the yarn, the seam will bunch and the tube will cinch. Instead, pull just enough to take up the slack—the seam should be as loose as the rest of the fabric. You can always tighten it later by pulling the tail.

Skipping stitches happens when you move too fast. Count your stitches before you start grafting: if you have 45 stitches on the cast-on edge, you should have 45 on the bind-off edge. If the counts don't match, you dropped a stitch somewhere, and the seam won't close evenly. Go back and pick up any dropped stitches before grafting.

Uneven decreases create a lopsided seam. If you decreased 3 stitches on the left side and 5 on the right, the edges won't meet. Count your decreases as you work and adjust on the fly. It's easier to add a decrease on the next row than to rip back and fix it later.

Visible seam after grafting usually means the yarn color doesn't match or the tension is inconsistent. Use the same yarn you knitted with (not a different dye lot), and practice the rhythm of Kitchener stitch on a scrap before grafting your finished piece.

When to use this method instead of circular needles

Straight needles work best for projects under 40 stitches wide. Once you go wider, the needles become unwieldy and stitches can slip off the ends. If you're knitting a large sweater body, a circular needle is faster and more comfortable.

This method also shines when you don't own a circular needle in the right size. If you need a 16-inch circular needle and only have 24-inch, knitting flat with straights and grafting the seam is a practical workaround. It's also useful for knitters who prefer the feel of straight needles—some people find them easier to control, even if the process takes longer overall.

Frequently Asked Questions

Can I knit in the round with straight needles without grafting?

Not really—the whole point of this method is that you knit flat and then graft to close the tube. If you want to avoid grafting, you need circular needles or double-pointed needles. That said, if you're willing to leave a visible seam, you can knit flat and sew the edges together with a backstitch instead of grafting, though the seam won't be as stretchy.

What if I mess up the Kitchener stitch seam?

Rip it out and try again. Kitchener stitch is forgiving—you can pull the yarn out, pick the stitches back up on a needle, and graft a second time. It usually looks better the second time because you understand the rhythm. If the seam is truly unsalvageable, you can always sew it closed with a mattress stitch instead.

How do I know if my decreases are even on both sides?

Count the stitches you've decreased on each side as you work. If you've done 10 rows of decreasing with one decrease per side per row, you should have removed 10 stitches from each edge. Mark your decreases with stitch markers if you tend to lose count—place one marker 2 stitches from each edge and decrease inside the markers.

Can I use this method for a sweater body?

Yes, but it's tedious for large projects. You'd knit the body flat, graft the side seam, then pick up stitches around the armholes to knit the sleeves. It works, but most knitters find it faster to use a circular needle and knit the body in the round without a seam. If you only have straight needles, it's doable—just budget extra time for grafting.

What yarn weight works best for this method?

Worsted weight and lighter yarns graft most cleanly because the stitches are small enough to see clearly. Bulky and super-bulky yarns can work, but the seam is more visible and harder to keep even. Slippery yarns like silk or rayon are harder to graft because stitches slide around; sticky yarns like wool are easier to control.