
Easy Crochet: Corner to Corner (C2C) Decreasing for a Perfect Square
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Time to read 12 min
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Time to read 12 min
Corner to Corner (C2C) crochet is a fun technique that lets you create amazing projects, from cozy blankets to intricate designs. If you already know the basics, it's time to learn how to shape your C2C creations into perfect squares. This post is all about decreasing, which is how we transform a growing diagonal into a neat, even square. I'm going to break down Krista's video from The Secret Yarnery, turning it into an easy-to-follow guide so you can master this essential skill!
This tutorial is great for crocheters who have tried C2C and are ready to make more complex shapes. If you are a visual learner make sure to watch the video below.
Table of contents
C2C crochet is unique because you work diagonally. Instead of rows, you build "blocks" from corner to corner. Each block is made with chain stitches and double crochets, creating a textured, pixel-like effect. This technique is super versatile, perfect for blankets, scarves, and even detailed picture patterns. If you are new to C2C check out this Comprehensive Corner to Corner Crochet Guide. I won't be covering the basics, instead I'm focusing on how to decrease and make a square.
Decreasing is the secret to shaping your C2C projects. Without it, you're stuck making rectangles. Learning to decrease allows you to create squares, which opens up a world of design possibilities. Think washcloths, coasters, or even quilt-like blankets made of many squares. Once you understand decreasing, your C2C skills will level up.
Before we start, let's gather our supplies. You'll need:
Stitch markers are your best friends when decreasing in C2C crochet. They act as a reminder, showing you exactly where to start decreasing. This is especially helpful because it's easy to get lost in the pattern and forget when to switch from increasing to decreasing.
I like to place stitch markers on each side of my work to clearly mark the decrease points. Think of them as traffic lights, telling you when to stop increasing and start shaping. If you don't have stitch markers, no problem! You can use a simple loop of yarn instead. Just loop it through the stitch where you need to decrease.
Alright, let's get to the good stuff! The following instructions are based on Christa's tutorial, so you can follow along with her in the video while reading this guide. By combining both, you'll have a crystal-clear understanding of the process.
Here is what we are going to cover: preparing your work, decreasing on each side, and tips for keeping everything straight.
When you're ready to make a square, you need to turn your work just like you normally do. Now, here's the change: instead of chaining six and making a new block, you're going to slip stitch. Slip stitch into the next stitch, then the next, and finally into the chain-three space. This slip stitching is what starts the decrease, making the edge shorter.
The middle part of the row stays the same. Chain three, then make three double crochets into the chain-three space. Slip stitch to join, just like before. Repeat this pattern all the way across the row. So far, so good, right? Nothing changes until you reach the end!
As you get closer to the end of the row, it's time to prep for another decrease. If you're using a stitch marker, you should be coming up to it now. If not, and you're using a loop of yarn, make sure it's in place to remind you. This is your cue: instead of making a new block, you're going to decrease.
Once you reach the end, slip stitch into the chain-three space. Now, turn your work again. You're going to slip stitch back along the side of the block you just made. Slip stitch into the first, second, and third stitches, and then into the chain-three space. These slip stitches are what create the decrease, shaping the edge of your square.
If you're using a stitch marker, move it to the side you're now decreasing on. Chain three and start your block by making three double crochets into the same space. Slip stitch to join into the next "mountain" or "staircase" – that's what I like to call those chain-three spaces. Work your way back across the row.
Keep repeating this decreasing process on each edge. Slip stitch up, work across, slip stitch up again. You'll see the square shape start to form as the edges get shorter. It might seem a little slow at first, but trust me, it picks up speed as you go!
As you work, take a look at your project. You should see a clear square forming, with the edges getting shorter as you decrease on both sides. If you're unsure, compare your work to the video to make sure you're on the right track.
Here's a great tip from Christa for when you need to pause your project: Don't end right at the end of a row! It's easy to forget what you were doing. Instead, join a block in the center of a row and place a stitch marker in that stitch. When you come back, you'll know exactly where you left off. I always crochet while watching TV, and this saves me every time!
You're almost there! As you get close to finishing, the rows will become very short. Soon, you'll only have one block left to complete. This is the final step in making your perfect square.
Okay, let's finish this square! Slip stitch to join as always. Turn your work and slip stitch up and into the chain-three spot. Chain three and build your block into this last chain-three space. Make three double crochets into the space. Slip stitch to join with a nice, tight slip stitch. Chain one to knot your work or secure your work. Cut your yarn and pull your hook up and your yarn through. Snug that down to secure.
After completing the last block, it's time to secure everything. Weave in the ends with a yarn needle to keep them from unraveling. Remove your stitch markers. And there you have it – a finished C2C square!
Want to add an extra touch? Consider adding a border to your finished square. A simple single crochet border can clean up the edges and give it a more polished look. Or, you can get fancy with a picot stitch or other decorative border. Whether or not you add a border is totally up to you and your project.
Now that you've made a C2C square, what can you do with it? Here are a few ideas:
Decreasing in C2C crochet means you stop adding new blocks at the edges, which shapes your project and creates straight or angled sides, allowing you to finish squares and shapes.
Uneven edges usually happen if slip stitches are missed or tension is inconsistent. Make sure to slip stitch in each required spot and keep your yarn tension steady.
Use stitch markers or a loop of contrasting yarn placed at the decrease points. This visual reminder tells you when to stop increasing and begin decreasing.
Carefully unravel (frog) stitches back to the mistake, fix it, and continue. Using stitch markers can help prevent missing a decrease spot.
Yes! By varying where you start to decrease, you can make rectangles, triangles, and more advanced shapes.
After the last block, secure your yarn with a chain and cut it. Weave in the loose ends with a yarn needle for a tidy finish.
Adding a border is optional. Borders can give a polished look and make joining squares easier, but your project will work without one.
This tutorial is designed for right-handed crocheters. If you're left-handed, don't worry! You can find a LEFT HANDED TUTORIAL 🍋 as well!
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Sometimes, things don't go as planned. Here are some common issues and how to fix them:
If you're still having trouble, don't hesitate to ask questions in the comments! You can also check out patterns for inspiration.
Even tension is key to a beautiful C2C project. Here are a few tips:
Want to make your C2C square unique? Here are some ideas:
Once you've mastered the basic decrease, you can explore more advanced C2C techniques:
Mastering the basic decrease is your stepping stone to these amazing skills.
Want to make a larger project? You'll need to join your C2C squares. There are several ways to do this:
Joining opens up the possibility of blankets, scarves, and so much more!
To keep your C2C projects looking their best, follow these care instructions:
How often you should wash your projects really depends on how much they're used.
I love being part of The Secret Yarnery community! It's a great place to share your finished projects, ask questions, and get inspired by other crocheters. Plus, you can always find support and new ideas within the community. And remember to subscribe to the channel for more tutorials!
Joining this community will provide support, encouragement, and inspiration for your projects.
Decreasing in C2C crochet is easier than you might think. By following these steps, you can create perfect squares and unlock a whole new world of C2C possibilities. So grab your hook and yarn, and start practicing!
Thank you to Christa from The Secret Yarnery for her clear and helpful tutorial. Now, it's your turn! Leave any questions or comments below, and show off your creations on social media. I hope you found this easy crochet tutorial helpful!
Easy crochet tutorial
Both right and left handed video tutorials
Downloadable PDF pattern is written in plain English - no abbreviations to decipher!
Perfect for beginners!
Easy crochet tutorial
Both right and left handed video tutorials
Downloadable PDF pattern is written in plain English - no abbreviations to decipher!
Perfect for beginners!