What Increasing a Stitch Means and Why You Do It

Increasing a stitch means adding an extra loop to your needle so you have more stitches to work with. You do this when a pattern calls for it—usually to make a garment wider, shape an armhole, or create a decorative detail. Instead of casting on new stitches at the edge (which is slow and leaves a visible seam), you add stitches evenly across a row or round so the fabric grows smoothly from the inside out.

Most knitting patterns tell you exactly where and how many stitches to increase. The method you choose affects how the increase looks. Some methods are nearly invisible; others create a small decorative hole or a visible diagonal line. Learning the most common techniques gives you control over both the fit and the appearance of your finished piece.

Key Takeaways

  • The most common increase methods are knit front and back (KFB), yarn over (YO), and make one (M1), each creating a different look.
  • Knit front and back is the easiest method for beginners and works by knitting into the same stitch twice before dropping it off the needle.
  • Yarn over creates a small decorative hole and is often used in lace patterns or when you want the increase to show.
  • Make one is nearly invisible and works by lifting the strand between two stitches and knitting into it, making it the choice for shaping where you want no visible line.
  • Increases are usually worked on right-side rows so they sit evenly and are easier to count and space correctly.

Knit Front and Back (KFB)—The Easiest Method

Knit front and back is the simplest increase and the best starting point if you are new to adding stitches. Insert your right needle through the front of the stitch on your left needle and knit it normally. Do not drop the stitch off the left needle yet. Instead, bring your right needle to the back of the left needle, insert it through the back loop of the same stitch, and knit again. Now drop the stitch off the left needle. You have made two stitches from one.

This method creates a small bump or twist at the base of the new stitch, which is visible but not objectionable in most garments. It works well for increasing in stockinette stitch (the smooth, V-pattern fabric) and is fast enough for projects where you need to add many stitches in one row. The downside is that the bump sits slightly to the left of where you worked it, so if you need a perfectly centered increase, make one is a better choice.

Common mistake: dropping the stitch off the left needle before you knit the back loop. Take your time and make sure both loops are complete before you move on.

Yarn Over (YO)—The Decorative Increase

A yarn over is an increase that creates a small hole in your fabric. It works by wrapping the yarn around the needle without knitting a stitch, which adds a loop. Yarn overs are standard in lace patterns and anywhere you want the increase to be a visible design feature rather than hidden.

To work a yarn over between two knit stitches, knit one stitch normally. Bring the yarn to the front of your work (toward you). Insert the right needle into the next stitch and knit it. The yarn wrapped around the needle creates the new stitch. If you are working between a knit and a purl stitch, the motion changes slightly—bring the yarn over the needle to the back, then purl. The key is that the yarn ends up on the needle without you knitting into it.

Yarn overs are the fastest increase to work and they never create a visible bump. The hole they leave is intentional and part of the design. If your pattern does not mention yarn overs and you see unexpected holes appearing, you may have accidentally created one by dropping the yarn or moving it at the wrong moment.

Make One (M1)—The Invisible Increase

Make one is the most invisible increase and the choice when you need stitches to appear out of nowhere with no visible line or bump. It works by lifting the horizontal strand that runs between two stitches and knitting into it. This strand becomes a new stitch.

To work a make one, locate the strand between the stitch you just worked and the next stitch on your left needle. Insert the left needle from front to back under this strand, lifting it onto the needle. Insert the right needle through the loop and knit it. The new stitch sits perfectly centered between the two stitches below it. Make one left (M1L) and make one right (M1R) refer to which direction you insert the needle and which direction the new stitch leans—patterns specify which one to use when shaping matters.

Make one takes a little practice to see and grab the right strand, especially on your first few tries. Work slowly and use good lighting. Once the motion becomes automatic, it is faster than it feels at first.

Spacing Increases Evenly Across a Row

Patterns often say something like "increase 6 stitches evenly across the row." This means spreading the increases so they are roughly the same distance apart. To figure out the spacing, count how many stitches you have before increasing and divide by the number of increases you need to make. If you have 60 stitches and need 6 increases, you would increase roughly every 10 stitches.

Mark your increases with stitch markers or a piece of scrap yarn before you start the row. Place a marker every 10 stitches, then work your increases at each marker. This takes a few extra seconds but prevents the common mistake of bunching increases at the beginning of the row and leaving the end flat. Evenly spaced increases create a smooth, professional-looking curve.

If the math does not divide evenly, work the increases slightly closer together at one end of the row and slightly farther apart at the other. The difference will not be visible in the finished piece.

Reading Your Pattern's Increase Instructions

Knitting patterns use abbreviations to tell you which increase method to use. KFB means knit front and back. YO means yarn over. M1 or M1L or M1R means make one. Some patterns spell out the full instruction instead of using an abbreviation, especially in beginner patterns. If you see an abbreviation you do not recognize, check the pattern's abbreviation key at the beginning—every pattern should have one.

Patterns also tell you when to increase: on a right-side row (the front of your work), a wrong-side row (the back), or every other row. Increases on right-side rows are easier to see and count, so most patterns place them there. If a pattern says to increase on a wrong-side row, the method stays the same—you are just working from the back of the fabric instead of the front.

Common Mistakes and How to Avoid Them

The most frequent mistake is losing track of where you increased, especially when spacing them evenly. Use stitch markers or a row counter to keep your place. Mark the row number on a piece of paper and check it off as you finish each row. This takes 10 seconds and saves you from ripping back.

Another common error is confusing yarn over with accidentally dropping a stitch. A yarn over is intentional—you wrap the yarn around the needle on purpose. If you drop a stitch by accident, you have a hole with no new stitch attached, and you will need to pick it up with a crochet hook. Yarn overs always have a loop sitting on the needle.

Beginners sometimes work increases too tightly, pulling the yarn hard and creating a stiff section. Relax your tension slightly when you increase, especially with make one. The new stitch should sit on the needle as loosely as the stitches around it.

Frequently Asked Questions

What is the difference between M1 and KFB?

KFB creates a small visible bump at the base of the new stitch and leans slightly to the left. M1 is nearly invisible and sits perfectly centered between the two stitches below it. Use M1 when you want shaping to be invisible, and KFB when speed matters more than appearance or when the bump will be hidden by ribbing or texture.

Can I use yarn over for shaping if the pattern does not call for it?

Yarn over creates a hole, so it changes the look of the fabric. Use it only when a pattern specifically asks for it or when you want the hole to be part of the design. For invisible shaping, stick with make one.

Do I increase on every row or every other row?

Your pattern tells you. Most patterns increase every other row (on right-side rows only) to create a gradual, even curve. Some increase every row for faster shaping. Follow the pattern's instructions exactly—the designer has already worked out the spacing and timing.

What if I miscounted and increased in the wrong spot?

If you notice the mistake within a few rows, you can rip back to that row and redo it. If the mistake is many rows back or you do not notice until you are nearly finished, it usually will not affect the fit enough to matter. Knitting is forgiving—small spacing errors disappear once the garment is worn and blocked.

How do I know if my increases are too tight?

The new stitches should sit on the needle as loosely as the stitches around them. If the area where you increased feels stiff or bunched, your tension is too tight. Relax your grip slightly and let the yarn flow more freely through your fingers on the next increase.