How To KFB in Knitting

KFB in knitting means “knit front back,” and it refers to a way of making two stitches out of one. Essentially, you are knitting into one stitch twice, leaving you with two stitches where there would otherwise be one. Let’s explore how this works.


Here’s a step-by-step, with some more detailed explanation in the blog post. 1. Knit through the front loop of the stitch. Do not slide the stitch off the left needle. 2. Using the tip of the right needle again, knit through the back loop of the same stitch. 3. Slide the stitch off the left-hand needle and onto the right needle.

Advantages of the KFB

The KFB is one of the easy methods for adding a stitch to your knitting, so it’s well suited to the beginning knitter. It’s essentially just a stitch you already know, with one extra step. In fact, the only increase I think is easier is the yarn over.

Disadvantages of the KFB

The main disadvantage of the KFB is that it’s a pretty visible increase. When you knit into the back of the loop of the old stitch to make a new stitch, it creates what looks like a purl bump across that new stitch you’re creating. If you’re working stockinette stitch or some other stitch patterns, that can lead to visible bumps across the right side of the fabric.

Using the KFB as a Decorative Element

if you plan carefully, you can make these little bumps part of your design, like I did with the bottom of my Emily’s Garden Tea Cozy (pictured in this post).

FAQ: Is KFB a left-leaning increase?

Yes. KFB leans to the left because it creates a new stitch on the left side of an existing stitch.

FAQ: What is the difference between KFB and PFB?

KFB is worked by knitting into the front and back of a stitch, while PFB is worked by purling into the front and back of a stitch. Although the two stitches use the same parts of the existing stitch, the yarn is wrapped differently to create either knit stitches (in KFB) or purl stitches (in PFB).

Curious to learn more about knitting or to dig deeper into this topic? Click on through for tutorials, free patterns, technique tips, and more.

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