How to Corner to Corner Crochet (BiCrafty Bootcamp: Beginner Crochet Lessons for Knitters: Lesson 13)

In both knitting and crochet, you know that you can work in rounds or in rows. Alternatively, you can work on the diagonal. In knitting, we often call this knitting on the bias. There are ways to crochet on the bias as well, one of the most popular of which is called Corner to Corner Crochet (or C2C Crochet). This week in BiCrafty Bootcamp is all about learning C2C crochet including how to read C2C charts.

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What is Corner to Corner Crochet?

corner to corner crochet christmas blanket pattern

As the name implies, you begin crocheting in one corner of the project and work your way towards the other corner. Therefore, you’re crocheting diagonal rows rather than horizontal ones.

There are other ways to crochet on the diagonal. For example, many years ago, I crocheted from corner to corner using just double crochet stitches, increasing along the sides until I got to the center and then decreasing along the sides.

Crochet on the Diagonal

In C2C, you essentially do the same thing. Although there are variations on C2C crochet, people commonly use a stitch that’s a variation of the granny stitch. So, you essentially make a 3 double crochet granny stitch to start the first diagonal row. Then you turn the work and use a technique to work on the diagonal to increase to two granny stitches in the second row and you continue turning and increasing until the blanket is about half the size that you want it to become.

Then you work some diagonal rows in the center that are the same length; we’ll go over this technique below. And after that, you keep turning but instead of increasing, you begin decreasing, still using that granny stitch variation.

Crochet Graphghans

corner to corner crochet blanket pattern

There’s a little bit more to it, including learning how to read C2C charts. However, that’s the overview of what corner to corner crochet is all about. The chart-reading part is important, though, because C2C crochet is often used to create graphghans. These are crochet blankets where you essentially take a picture, make a grid out of it, and use that as a chart to create an image-based crochet square or blanket. So, we’re going to look at graphghans and C2C crochet today.

History of Corner to Corner Crochet

C2C Crochet has probably been around in some form for a very long time. However, I remember that it suddenly burst onto the scene and became extremely popular about ten years ago.

My personal history with learning C2C crochet comes from admiring the beautiful work of Sarah Zimmerman from Repeat Crafter Me who is well-known for making amazing crochet graphgans. I had come across a beautiful Christmas blanket pattern that she’d created. I loved everything about it and immediately wanted to learn what the technique was all about. After I learned from her, I created my Heart Throb C2C Blanket.

While there are now many different C2C crochet patterns out there, she definitely continues to be a leading designer in this niche.

How to Read a Corner to Corner Crochet Chart

As you’ll see in the video for today’s lesson, here’s how to read a crochet chart:

  • Begin in a corner. Often the designer has labeled the corner with “1” and/or “start here” to indicate where to begin.
  • Each square on the chart is one color. You use that color to crochet the C2C stitch (which, as you’ll see, is a variation on a granny stitch) for that square. Then you read the next square.
  • Read the chart on the diagonal, working back and forth, up and down.

Materials for C2C Crochet

Corner to corner crochet is a technique, which means that you can use any yarn and any crochet hook to work it. Of course, if you’re using a pattern, then the pattern should indicate what to use. For this project demonstration, I used:


Red Heart Super Saver worsted weight yarn

Crochet Hook

Size I/9 5.5 mm; see crochet hook chart here

Corner to Corner Restful Throw Pattern

corner to corner crochet throw pattern

In order to begin learning how to C2C crochet, we’re going to work with the Corner to Corner Restful Throw free pattern. Here’s how:

How to Increase In Corner to Corner Crochet

Ch 6.

Row 1: Dc in 4th ch from hook and next 2 ch. Note, this creates the first set of three double crochet stitches, which is the granny stitch. That’s one block, which makes up one square on the chart. It’s the first square in the corner.

Row 2: Ch 6, dc in 4th ch from hook and in next 2 ch (1st block of row made), (slip st, ch 3, 3 dc) all in ch-3 space of previous row (second block of row made), turn. Note: the first Chain 6 is the increase that adds the new block to the next diagonal row. This is how you keep growing the size of the blanket as you work from that first corner towards the opposite corner.

Row 3: Ch 6, dc in 4th ch from hook and in next 2 ch, [(slip st, ch 3, 3 dc) all in next ch-3 space of previous row] twice, turn. It’s row 3 and you should have 3 blocks in this diagonal row.

Now you’re going to continue increasing. Just keep doing what you’re doing, adding those blocks row by row. You’re going to do this until about the middle of the pattern.

How to Crochet Center Rows in C2C Crochet

Your corner to corner crochet pattern indicates when you’re ready to start the center rows. Basically, when you’re ready to form the second corner, you’re ready do this part.

When you get to the center rows, you’re going to make several of them the same length as one another. However, in order to do that, you need to complete a two-row repeat in which you’ll decrease one block at the beginning of a row and then increase one block at the beginning of the following row.

Decrease Row 1: Slip st across first 3 dc to ch-3 space of second block of previous row, [(slip st, ch 3, 3 dc) all in next ch-3 space of previous row] to end of row, turn

Increase Row 2: Ch 6, dc in 4th ch from hook and in next 2 ch, [(slip st, ch 3, 3 dc) all in next ch-3 space of previous row] to last block, slip st in ch-3 space of last block, turn.

Repeat those two rows until the pattern indicates or you’re ready to complete the third corner.

How to Decrease in C2C Crochet

After that, you simply need to decrease row by row, one block at a time, until you get to that fourth corner. You already learned how to decrease above (in the first of the two-row pattern repeat for the center rows).

How to Corner to Corner Crochet Video Instruction

Here is this week’s full video lesson on how to corner to corner crochet:

Additional Helpful Videos:

Most of the time you’ll see corner to corner crochet worked as these boxes of double crochet stitches. However, you can work them in other stitches as well. Here’s a simple Half Double Crochet Variation:

So far, we’ve worked C2C crochet rectangles. However, you can also work C2C crochet squares:

See my other C2C crochet videos here.

Keep Practicing!

Here are some additional helpful links to keep growing your crochet skills in this niche:

Check Out: Spring Blog Hop Coming Up!

Spring Crochet Pattern Bundle and Blog Hop

I’m thrilled to join many other amazing crochet designers in this year’s Spring Blog Hop and Pattern Bundle by E Claire Makery. Learn more here.

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Marly Bird

The One and Only, Marly

Marly is a knitwear and crochet designer (and yarn addict) that is here to help you learn how to knit and crochet in a way that's fun and approachable.

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