Weaving in ends means threading your yarn tails through finished stitches so they don't unravel
When you finish a knitting project or join a new color, you are left with loose yarn ends. Weaving in ends is the process of running those tails through the loops of your finished fabric using a needle, so they become part of the structure and cannot pull free. Without this step, your seams will come apart and your color changes will separate.
The method works the same way whether you are finishing off a project, hiding a knot where you joined yarn, or securing a new color mid-project. You thread a tapestry needle with the tail, pass it through stitches in a way that anchors it, and trim the excess. Done correctly, the end disappears into the fabric and the work holds together through washing and wear.
Key Takeaways
- A tapestry needle with a blunt tip is the right tool; a sharp sewing needle will split your yarn and create weak spots.
- Thread the needle with your yarn tail, then weave it horizontally through the bumps on the back of your stitches for at least two inches.
- Change direction and weave back through a different row of stitches to lock the end in place and prevent it from sliding out.
- Trim the tail close to the fabric after weaving; leaving too much length gives the end room to work loose over time.
- Ends woven along seams or color changes are stronger than ends woven through the middle of flat fabric.
What you need before you start
You will need a tapestry needle — also called a yarn needle — which has a large eye to hold yarn and a blunt, rounded tip. The blunt tip is essential because it slides between stitches without piercing the yarn itself. A sharp sewing needle will split your fibers and weaken the spot where the end is anchored. Tapestry needles come in sizes 13 through 18; size 16 or 17 works for most worsted-weight yarn.
You also need the yarn tail itself, which should be at least four to six inches long. If your tail is shorter than that, you do not have enough length to weave safely; the end will pull out during wear. If you cut your yarn too short when finishing, you can tie on a temporary length of matching yarn, weave that in, and then weave the short original tail alongside it for extra security.
The basic weaving technique
Thread your yarn tail through the tapestry needle. On the back side of your work (the side facing you if you are looking at the wrong side of the fabric), locate a row of stitches near where your tail emerges. Insert the needle under the bump of the first stitch, going from right to left or left to right — the direction does not matter as long as you stay consistent.
Pull the yarn through, leaving a small loop on the side you came from. Move to the next stitch in the same row and insert the needle under its bump, going the same direction. Pull the yarn through again. Continue this horizontal weaving for at least two inches, passing under the bumps of four to six stitches. This length anchors the end so it cannot slide out.
After you have woven horizontally, change direction. Weave back through a different row of stitches — one row above or below the row you just used — going the opposite direction. This creates a lock: the yarn end is now threaded in two different directions and cannot pull free. Weave for another two inches in this new row, then trim the tail close to the fabric with scissors.
Weaving ends at color changes and seams
When you change colors mid-project or join a new ball of yarn, you have two tails to weave: the old color and the new color. Weave each one separately, but do it along the seam or edge where the colors meet. This placement is stronger than weaving through the middle of flat fabric because the seam itself provides structure.
If you are working stripes, weave the old color upward along the edge of the color change for two inches, then change direction and weave downward along the same edge. Do the same with the new color. The two ends will sit side by side along the seam, and the seam will hold them both in place. This method is especially useful for projects that will see heavy use, like sweaters or blankets.
For projects with multiple color changes — like Fair Isle or intarsia work — weave each color end along its own edge or seam rather than through the middle of the pattern. This keeps the fabric flat and prevents the ends from creating bumps under the pattern.
Weaving in ends on ribbed and textured fabrics
Ribbed fabric (knit and purl columns) gives you more structure to weave into than stockinette stitch. Thread your needle and weave horizontally through the bumps of the knit columns only, skipping the purl columns. The knit stitches are taller and create clearer bumps to thread under, so your needle will move more smoothly and the end will anchor more securely.
Garter stitch (all knit rows) has bumps on both sides, which makes it straightforward to weave in ends — you have plenty of texture to grip. Weave horizontally for two inches, change direction, and weave back. The bumps are large enough that your needle will not slip.
Textured stitches like seed stitch or moss stitch also offer good grip because of their uneven surface. Avoid weaving through the centers of cables or bobbles; instead, weave along the edges of these features where the yarn is less likely to shift.
Common mistakes that cause ends to come loose
The most common error is weaving in only one direction. If you weave horizontally and then trim, the end can slide out sideways over time, especially after washing. Always weave in two directions — horizontal, then vertical — to lock the end in place.
Weaving too short is another problem. Two inches of weaving is the minimum; one inch is not enough. If you are working with a slippery yarn like silk or rayon, weave three inches in each direction to be safe. Weaving too long is not a problem — extra length just means extra security.
Using the wrong needle will also cause failure. A sharp sewing needle splits the yarn fibers instead of sliding between them, creating a weak anchor point. The end will eventually pull free. Always use a blunt tapestry needle.
Leaving too much tail after weaving is a third mistake. If you trim the tail to a quarter-inch or more, it has room to work loose. Trim as close to the fabric as you can without cutting into the weave itself — a sixteenth of an inch is ideal.
Weaving in ends before or after blocking
You can weave in ends before or after blocking your finished piece, and both methods work. If you weave before blocking, the ends are already secured and will not shift during the blocking process. If you weave after blocking, you avoid having to handle the ends while the fabric is wet and fragile.
Many knitters prefer to weave before blocking because it is faster — you finish the weaving and move straight to blocking without extra steps. Others weave after blocking because the fabric is already shaped and it is easier to see where the ends sit in the finished piece. Choose whichever order feels more natural to your workflow.
If you are weaving after blocking, wait until the piece is completely dry. Wet yarn is slippery and harder to control, and the end may shift as the fabric dries.
Frequently Asked Questions
Can I weave in ends with the working yarn while I am still knitting?
No. Weaving in ends while the piece is still on the needles risks snagging your working yarn and creating holes or loose stitches. Always finish knitting, bind off, and remove the piece from the needles before you weave in any ends. The only exception is if you are using a crochet hook to hide ends as you go in crochet, but that is a different technique.
What if I wove in an end and it came loose after washing?
The end did not weave deep enough or in enough directions. Unweave it, thread the needle again, and weave in two directions this time — at least two inches in each direction. If the yarn is slippery, weave three inches. After re-weaving, trim very close to the fabric and test by gently tugging the end; it should not budge.
Do I have to weave in ends on the back of the fabric, or can I do it on the front?
Always weave on the back (wrong side) of the fabric. Weaving on the front creates visible bumps and discoloration that will show in the finished piece. If your project is reversible and both sides show, weave along a seam or edge where the end is less visible, rather than through the middle of the fabric.
Is there a faster way to weave in lots of ends?
Not really, but you can speed up the process by gathering all your ends before you start, threading your needle once, and weaving multiple ends in sequence without rethreading. Some knitters also use a crochet hook instead of a tapestry needle — it can be faster for certain stitches — but the basic two-direction weaving method is the standard for security.
What happens if I just tie the ends in a knot instead of weaving them?
A knot will hold temporarily, but it will come loose during washing or heavy wear, and the knot itself will create a visible lump in the fabric. Weaving takes a few extra minutes but makes the difference between a project that falls apart and one that lasts for years.