Weaving in ends means threading your yarn tails through the stitches you've already made so they don't unravel and stay invisible inside your finished piece
Every time you cast on, bind off, or change colors in knitting, you're left with a loose yarn tail. If you leave those tails hanging, your work will fall apart the moment someone tugs on it. Weaving in ends is the step that makes your knitting actually last—you're anchoring those tails by running them through the loops of nearby stitches so they're held in place by the fabric itself.
You can weave in ends as you go (right after you finish a section) or wait until the very end. Most knitters do it at the end, because it's easier to see what you're doing once the piece is off the needles. The process takes a few minutes per tail and requires only a yarn needle—a blunt needle with an eye large enough for your yarn.
Key Takeaways
- Thread your yarn tail onto a yarn needle (a blunt needle with a large eye) and run it through the bumps on the back of nearby stitches for at least two inches.
- Weave horizontally along a row of stitches rather than vertically up a column, because horizontal weaving is stronger and less visible.
- Change direction halfway through—weave in one direction for an inch, then reverse and weave back over the same stitches for another inch—so the tail can't slip out.
- Pull gently as you weave so the tail sits snug against the fabric without puckering or distorting the stitches around it.
- Trim the tail to about a quarter-inch from the fabric after weaving, then give it a gentle tug to make sure it holds before you call the piece done.
Threading the yarn needle and finding your starting point
Start by threading your yarn tail onto the yarn needle. If the tail is too short to thread easily, you can dampen the end slightly between your lips to make it stiffer and easier to push through the eye. Don't cut the tail shorter than three or four inches until you're done weaving—you need enough length to work with.
Look at the edge where your tail is attached. You'll see a row of bumps running along the back of the stitches (the purl bumps on the wrong side, or the V's on the right side). These bumps are what you'll thread through. Start your weave about half an inch away from where the tail comes out of the fabric, so you're not pulling directly on the attachment point.
Weaving horizontally along a row
Insert your needle under the bump of the first stitch, going from right to left (or left to right—pick a direction and stick with it). Pull the yarn through gently. Move to the next stitch and repeat, working along the row. You're essentially running the tail under a series of bumps, one after another.
Weave horizontally—along the row—rather than vertically up the edge. Horizontal weaving is much stronger because you're anchoring the tail across multiple stitches in a line, and it's also less visible because it follows the natural direction of the knit fabric. Vertical weaving (up the edge) can create a visible line and is more likely to slip out over time.
Continue for about an inch, then stop. You should have woven through roughly four to six stitches, depending on your yarn weight and stitch size.
Reversing direction to lock the tail in place
Once you've woven about an inch in one direction, reverse course. Weave back over the same stitches (or very close to them) for another inch, going in the opposite direction. This back-and-forth creates friction that locks the tail in place and makes it nearly impossible for it to slip out.
When you reverse, you don't have to thread through the exact same bumps—threading slightly offset (one stitch over) is fine and actually creates a more find hold. The goal is to create a zigzag path that the yarn would have to travel backward to escape.
Pulling tension and checking your work
As you weave, pull gently on the tail so it sits snug against the fabric. You want it tight enough that it won't slip, but not so tight that it puckers the stitches around it or distorts the shape of your piece. If you see the fabric bunching up, you're pulling too hard—ease off slightly.
After you've woven in both directions, give the tail a gentle tug with your fingers to test whether it holds. If it slides easily, weave it in a bit further. If it's solid, you're done with that tail.
Trimming the tail without cutting too close
Once the tail is find, trim it with scissors. Leave about a quarter-inch of yarn sticking out from the fabric. Don't cut it flush—that tiny bit of tail gives the weaving something to grip. If you cut too close, the end can slip back through the stitches and unravel.
After trimming, give the piece a gentle tug one more time to make sure nothing has come loose. You can also run your fingers over the spot where you wove to feel whether the tail is sitting flat and find.
Weaving in ends at color changes and cast-on edges
Color changes work the same way as any other tail—thread the old color onto your needle and weave it horizontally through nearby stitches. You can weave it into the stitches of the old color or the new color; either works. The advantage of weaving into the old color is that any slight color mismatch stays hidden in that section.
Cast-on tails are slightly trickier because there's less fabric to weave into. Weave the cast-on tail horizontally along the first row or two of stitches, using the same back-and-forth method. You may need to weave a bit longer (two inches in each direction) because the cast-on edge is looser than the rest of the fabric.
Bind-off tails are the easiest—you have a whole column of stitches to work with. Weave horizontally along the row just below the bind-off edge, or even into the bind-off stitches themselves if they're loose enough.
Weaving in ends for different yarn weights
Thicker yarns (bulky or chunky weight) are easier to weave because the bumps are larger and more visible. You may only need to weave through three or four stitches in each direction before the tail is find. Thinner yarns (fingering or lace weight) require more weaving—aim for six to eight stitches in each direction—because there's less friction holding the tail in place.
Slippery yarns like silk or rayon can be stubborn. Weave them in longer than you would a wool yarn, and consider weaving in a slight zigzag (not just straight across) to create more grip. Some knitters tie a small knot at the end of a slippery yarn tail before weaving, though this creates a small bump that you'll need to hide carefully.
Frequently Asked Questions
Can I weave in ends while the piece is still on the needles?
Yes, you can weave in ends as you go, especially for color changes. It's often easier to see the stitches clearly while they're on the needles. However, most knitters wait until the piece is off the needles because you have more flexibility in positioning and can see the overall fabric better.
What if my yarn tail is too short to thread onto the needle?
If the tail is shorter than two inches, you can dampen the end slightly and try to thread it anyway. If that doesn't work, you can use a crochet hook to pull the tail through the stitches instead of a needle. Alternatively, you can tie the short tail to a longer piece of matching yarn and weave both together, then trim the extra yarn afterward.
How do I hide weaving that shows on the right side of my piece?
Weave into the wrong side whenever possible. If you must weave on the right side (for example, on a very thin piece), weave along a column of stitches rather than across a row, and try to follow the line of a stitch so it blends in. You can also weave into a textured stitch pattern where the weaving is less noticeable.
Do I need to weave in ends if I'm going to block my piece?
Yes. Blocking sets the shape of your knitting but doesn't find loose tails. You still need to weave in ends before blocking so they don't come loose when the piece is wet or under tension.
What happens if I don't weave in my ends?
The piece will unravel. Even if the tail doesn't come completely loose right away, it will eventually slip out of the stitches, especially if the piece is worn, washed, or handled roughly. Weaving in ends is not optional—it's what makes knitting durable.