What a lifeline is and why you need one

A lifeline is a length of yarn or thread you run through a row of live stitches on your needles as you knit. If you make a mistake several rows above it, you can pull out your work back to the lifeline row, put your stitches back on the needle at that point, and start over from there—instead of unraveling all the way to the beginning or frogging (ripping out) stitch by stitch.

You do not need a lifeline for every project. But they are invaluable when you are working a complicated stitch pattern, a large garment where mistakes are expensive, or a yarn that is hard to pick up once it unravels. A lifeline takes about 30 seconds to add and can save you an hour of frustration.

Key Takeaways

  • Thread a blunt needle with smooth yarn or thread, then weave it through every live stitch on your needle from left to right, leaving long tails on both ends.
  • Add a lifeline every 10 to 20 rows, or before you start a new stitch pattern or technique you are unsure about.
  • Use yarn thinner than your working yarn and a contrasting color so you can see it and remove it easily later.
  • When you need to use the lifeline, drop your stitches, pull out the rows above it, then pick up the stitches from the lifeline row and continue knitting.

Choosing the right yarn or thread for your lifeline

The yarn you use for a lifeline should be smooth and slippery so it slides through your stitches without snagging. Smooth cotton yarn, embroidery floss, or even dental floss works well. Avoid fuzzy or textured yarn—it will catch on your stitches and be nearly impossible to pull out later.

Pick a color that contrasts sharply with your working yarn. If you are knitting with dark gray, use bright yellow or white for the lifeline. You need to see it clearly when you are picking up stitches or deciding whether to use it. The lifeline does not become part of your finished fabric, so the color does not matter for the final look.

You do not need much—a length about three times the width of your project is plenty. If you are working on a sweater that is 40 inches around, a 120-inch length of lifeline yarn gives you room to tie it off on both ends and still have slack.

How to thread and insert a lifeline

Use a blunt needle—a tapestry needle or yarn needle works perfectly. Thread it with your lifeline yarn and tie a knot at one end so it does not slip through. You are going to weave this needle through every live stitch on your needle, from left to right.

Hold your knitting needle in your left hand with the working yarn attached. Insert the blunt needle through the first stitch on your needle from left to right, going under the stitch (not through the yarn). Pull the lifeline yarn through, leaving a 6-inch tail hanging on the left side. Continue moving the blunt needle through each stitch on the needle, always going from left to right and always going under the stitch itself, not splitting the yarn.

When you reach the end of the row, pull the lifeline yarn through the last stitch and leave another 6-inch tail on the right side. You now have a line of yarn running through all your live stitches. Tie the two tails together loosely—just a straightforward knot—so the lifeline does not slip out. Do not pull it tight; you want slack so the lifeline does not distort your stitches.

When and how often to add lifelines

Add a lifeline before you start any technique or stitch pattern you are not completely confident about. If you are working a cable pattern for the first time, add a lifeline before the first cable row. If you are learning a new decrease or increase, add one before you start.

For straightforward stockinette stitch or garter stitch, add a lifeline every 15 to 20 rows as insurance. For complex colorwork, lace, or cables, add one every 10 rows or even more often. The more rows you have above a lifeline, the more you lose if you have to use it.

You can have multiple lifelines in the same project. Once you have knitted 10 rows past a lifeline and you are confident those rows are correct, you can remove the old lifeline and add a new one. This keeps your project from getting tangled with old yarn.

How to use a lifeline when you find a mistake

When you discover a mistake several rows up, first count how many rows above your lifeline it is. If the mistake is only two rows up, it might be faster to fix it with a crochet hook. But if it is five rows up or more, the lifeline is your friend.

Drop all your stitches off the needle carefully. Gently pull out the working yarn, unraveling row by row until you reach the lifeline. The lifeline will catch all your stitches and hold them in place. Once you have unraveled back to the lifeline, carefully remove the knot you tied and slide the lifeline yarn out, one stitch at a time, placing each stitch back on your needle as you go. Work from left to right so the stitches are in the correct direction.

Once all the stitches from the lifeline row are back on your needle, you can pick up your working yarn and start knitting again from that point. You have lost only the rows above the lifeline, not your entire project.

Common mistakes to avoid with lifelines

Do not pull the lifeline tight. If you cinch it, it will distort your stitches and make them uneven. The lifeline should sit loosely through your stitches, almost like it is just resting there.

Do not use yarn that is too thick or textured. It will catch on your working yarn and make it hard to knit. It will also be nearly impossible to remove later without snagging your stitches. Smooth, thin yarn slides out cleanly.

Do not forget to tie off both ends. If you leave the lifeline loose, it can slip out of your stitches as you knit, and then it is useless. A straightforward knot on each end takes five seconds and prevents hours of regret.

Do not add a lifeline through twisted stitches or stitches you are unsure about. If you are not confident the row is correct, add the lifeline one row below or one row above, in a row you know is right.

Lifelines for different needle types

Lifelines work the same way on circular needles, straight needles, and double-pointed needles. On circular needles, weave the lifeline through all the stitches around the circle, then tie the ends together. On double-pointed needles, weave through the stitches on each needle in order, then tie off.

If you are using very small needles (size 0 or 1), use thinner lifeline yarn—embroidery floss or a single strand of yarn works better than a full strand. If you are using very large needles (size 15 or bigger), a thicker lifeline yarn is easier to see and handle.

Frequently Asked Questions

Can I use regular yarn as a lifeline?

You can, but smooth yarn works much better. If your working yarn is fuzzy or textured, it will catch on the lifeline and make it hard to remove. Embroidery floss, cotton yarn, or even thread is easier to pull out cleanly later.

What if I accidentally knit over my lifeline?

It happens. Gently pull the lifeline out from under the stitches you knitted over it. If a stitch gets tangled, use a crochet hook to carefully work it free. The lifeline yarn is usually strong enough to handle this without breaking.

Do I have to remove lifelines before I bind off?

Yes. Before you bind off your project, remove all lifelines by untying the knots and sliding the yarn out stitch by stitch. If you bind off with a lifeline still in place, it will be trapped in your finished edge and very hard to remove.

Can I add a lifeline to a project I have already started?

Yes. Use the same method—thread a blunt needle with lifeline yarn and weave it through the live stitches on your needle. You can add one at any point in your project, even if you did not plan ahead.

How do I know if I actually need to use the lifeline?

Use it if the mistake is more than two or three rows above it and fixing it in place would take longer than unraveling and reknitting. If you can fix it with a crochet hook in two minutes, do that. If you are looking at 20 minutes of careful stitch fixing, the lifeline saves time.