What M1 means and when you use it

M1 stands for "make one" and is a way to add a new stitch to your needle by lifting the horizontal strand of yarn that sits between two stitches and knitting into it. Unlike yarn-over increases, which create a visible hole in your fabric, M1 produces a nearly invisible increase that blends into the surrounding stitches. You use M1 when you need to add stitches for shaping — sleeves, necklines, waistlines — without drawing attention to the increase itself.

The stitch appears in patterns as M1, M1L (make one left), or M1R (make one right). The direction matters because it affects which way the new stitch leans. A left-leaning increase and a right-leaning increase mirror each other, which is why patterns often call for them in pairs on opposite sides of a garment.

Key Takeaways

  • M1 is made by lifting the strand between two stitches and knitting into it, creating an increase that does not leave a hole.
  • M1L (left) and M1R (right) refer to the direction the new stitch leans, and patterns use them in pairs for balanced shaping.
  • The difference between M1L and M1R is which way you insert your needle into the lifted strand.
  • M1 sits between existing stitches, so you work it on the row itself rather than at the edge.

How to work M1 right (M1R)

M1R is the most common version and leans to the right. Start with your working yarn in front of your needles. Using the tip of your left needle, pick up the horizontal strand that runs between the stitch you just worked and the next stitch on your left needle. Lift it from front to back — this is the key detail. You now have a new loop on your left needle.

Insert your right needle through that loop from left to right (the normal direction), and knit it. The new stitch is complete. The strand you lifted becomes a stitch, and the increase is done. On the next row, you will see a small diagonal line leaning right where the increase sits.

How to work M1 left (M1L)

M1L leans to the left and is worked almost the same way, with one difference in how you insert your needle. Pick up the strand between the stitch you just worked and the next stitch, lifting it from back to front this time. You now have a loop on your left needle.

Insert your right needle through that loop from right to left (the opposite of normal), and knit it. This reversal of direction is what makes the stitch lean left instead of right. The increase is complete. On the next row, you will see a small diagonal line leaning left.

Why the direction of the lifted strand matters

The way you pick up the strand — front to back versus back to front — changes the orientation of the loop on your needle. When you then knit through it in the direction you normally would (or in reverse), the stitch twists slightly, and that twist determines which way it leans.

This matters because a left-leaning increase and a right-leaning increase create a mirror image. If you increase on both sides of a sleeve or neckline, using M1L on the left side and M1R on the right side makes the shaping look intentional and balanced. If you use the same direction on both sides, the increases will look off-center.

Where to place M1 increases in your pattern

M1 sits between two stitches on the working row, so you work it as you knit across. Your pattern will tell you exactly where — often something like "K5, M1R, knit to last 5 stitches, M1L, K5." This means knit 5 stitches, make one right, continue knitting, then near the end make one left, then knit the last 5 stitches.

Because M1 is worked in the middle of a row rather than at the edge, it is useful for increases that need to be invisible or nearly so. Edge increases (like yarn-overs or lifted increases at the selvedge) are easier to seam later, but M1 is the choice when you want the shaping to disappear into the fabric.

Common mistakes and how to avoid them

The most common error is picking up the strand in the wrong direction. If your M1R is leaning left or your M1L is leaning right, you picked up the strand backwards. The second mistake is inserting your needle through the loop in the wrong direction — for M1R, go left to right; for M1L, go right to left. If you knit through the loop the normal way for both, they will both lean the same direction.

Another mistake is picking up the strand too loosely. If the loop is slack, the new stitch will be loose and visible. Pull gently on the working yarn after you knit the increase to tighten it. The increase should sit snugly between its neighbors. Finally, do not confuse M1 with yarn-over increases — M1 creates a closed stitch, while yarn-overs intentionally leave a hole.

M1 versus other increase methods

Yarn-over increases (YO) are faster and create a decorative hole, which is useful for lace patterns. Lifted increases (also called bar increases) are worked by knitting into the stitch below, and they leave a small horizontal bar that can be decorative or hidden depending on placement. Knit front and back (KFB) increases are the simplest but create a visible bump.

M1 is the middle ground: it is nearly invisible, works anywhere in a row, and produces a clean result. It takes a little more care than KFB but less planning than a yarn-over. Most fitted garments — sweaters, cardigans, fitted dresses — use M1 for shaping because the increases disappear into the fabric.

Frequently Asked Questions

What if I cannot see the strand between stitches?

The strand is always there — it is the horizontal line of yarn connecting two stitches. Look at the base of your stitches on the left needle. The strand runs between the stitch you just worked and the next stitch waiting to be worked. If your yarn is dark or your needles are thick, use your needle tip to gently separate the stitches and make the strand visible.

Do I have to use M1L and M1R in pairs?

No, but patterns usually call for them in pairs because they create balanced shaping. If you use only M1R on both sides of a sleeve, the increases will both lean right and the shaping will look uneven. Pairs make the garment look intentional. Single increases are fine for asymmetrical designs or when the pattern specifies.

Can I use M1 at the edge of my knitting?

Technically yes, but it is not ideal. M1 works best in the middle of a row because the increase sits between stitches. At the edge, it can be awkward to pick up the strand and may create an uneven selvedge. Edge increases like yarn-overs or lifted increases are easier to work and seam.

What does it mean if my M1 looks like a hole?

You likely picked up the strand too loosely or did not tighten it after knitting. Pull gently on the working yarn after completing the increase. If the hole remains, the strand may have been picked up in the wrong direction — check whether it is leaning the way your pattern intended.

How many stitches do I add with one M1?

One M1 adds exactly one stitch. If your pattern says to increase 4 stitches in a row, you work M1 four separate times across that row, spacing them as the pattern directs.