There are some bits of “assumed knowledge” in crochet that designers follow but don’t always spell out. These are the quiet little details that can make a big difference in how your project turns out, things like when turning chains count, what those numbers at the end of a row mean, or how to handle gauge when it isn’t included.
Once you understand these crochet standards, you’ll get more consistent, professional results and be able to follow patterns with confidence.
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What are Crochet Standards?
Crochet standards are the shared guidelines designers use to write clear, consistent patterns. Understanding these makes reading and following patterns much easier.
The Craft Yarn Council set crochet industry standards. Book publishers, crochet designers, crochet magazines and yarn companies all use their standards in their work. They standardize a lot of information that you use everyday in crochet that you may not realize. Like setting yarn standards for the thickness of the yarn (yarn weight), abbreviations for basic crochet stitches, providing sizing charts and more.
Crochet Standards Every Crocheter Should Know
Before we dive into the unwritten rules, let’s quickly go over a few basics that all designers use:
- US vs. UK Terms: Patterns will usually specify which system they use. In US terms, “sc” means single crochet, while in UK terms it’s a double crochet. Always check before you start.
- Stitch Abbreviations: Most patterns follow the Craft Yarn Council’s (CYC) abbreviation list. If something looks unfamiliar, refer to your pattern’s abbreviations section first.
- Note on abbreviations: With the rise of AI-generated and automatically translated crochet patterns, you may come across abbreviations that don’t exist in standard lists and can’t be found online. This is often a red flag that the pattern may be fake or poorly translated.
- Note on abbreviations: With the rise of AI-generated and automatically translated crochet patterns, you may come across abbreviations that don’t exist in standard lists and can’t be found online. This is often a red flag that the pattern may be fake or poorly translated.
- Hook Sizes and Yarn Weights: Crochet patterns usually list yarn weight and hook size together. The Craft Yarn Council creates the standards for these so that a G hook should be the same measurement across companies and that yarns given a certain weight fall into the same expected wraps per inch. Learn more about how to choose the right crochet hook size for your project in my tutorial here.
- Gauge and Tension: Gauge helps ensure your finished item matches the designer’s size. We’ll talk more about gauge later in this post, but it’s an important part of creating consistent results.
- Pattern Layout: A complete crochet pattern should include the following information: Skill level, terminology used, supplies, gauge, abbreviations for the stitches used in the pattern, special stitches and technique instructions (when needed), notes, and the pattern instructions in that order.
Now let’s get into the rules that often don’t get spelled out but every crocheter should know.
Unwritten Rules Every Crocheter Should Know

Turning Chains: When They Count as a Stitch (and When They Don’t)
Turning chains can be confusing at first, especially since different stitch heights behave differently.
Here’s the standard:
- A chain 1 turning chain at the start of a row almost never counts as a stitch. The standard says that they don’t count, however, some designers may include them in special techniques for their projects and if the designer does include them, it should always be noted for you. If it is not noted, you can safely conclude it doesn’t count as a stitch.
- A chain 2 turning chain may or may not count, depending on the designer (but most often it doesn’t). It should be noted somewhere in the pattern (usually the note section) if it is included as a stitch count.
- A chain 3 usually does count as a stitch because it’s the same height as a double crochet. Again, it should be noted in your pattern.
If your pattern doesn’t specify, use this rule of thumb: when the turning chain counts as a stitch, you’ll skip the very first stitch of the row. When it doesn’t, you’ll work your first stitch directly into that first one.
If something doesn’t look right, check your stitch count. That’s usually where the answer is hiding.

Do Slip Stitch Joins Count as A Stitch?
The simple answer here is: no, they don’t.
The standards say that when you join the end of the round with a slip stitch, it is not included as a stitch and will therefore, not be included in the stitch count for the row/round. There are a few exceptions to this rule but it should be noted in the pattern. If it is not noted, it is safe to assume it doesn’t count as a stitch.
Tip: The slip stitch join closes the round but isn’t part of the stitch count. Think of it as a “fastener,” not a stitch.
What are Those Numbers in Parentheses ( ) at the End of My Row/Round?
Those little numbers in parentheses at the end of your row or round are your stitch counts. They’re there to help you double-check your work.
For example, if a pattern says:
Row 5: CH 1, SC in each ST across. (20)
You should have 20 stitches in that row. No more, no less.
If your count doesn’t match, something went off somewhere. These counts are your best friend when troubleshooting a pattern.
When a Crochet Row or Round Doesn’t Include a Stitch Count
Including stitch counts at the end of a row or round is a way for makers to ensure they have completed a row or round accurately. While crochet standards indicate that all patterns should include them, you may come across situations where your pattern has a row/round that doesn’t have them.
The general rule is: if a stitch count isn’t listed, your stitch count should be the same as the row or round before it.
Designers do this to avoid redundancy when the count isn’t changing. If your pattern doesn’t include one for the entire pattern, you will be left trying to figure it out on your own.
Now that we’ve covered the basics of how patterns are structured, let’s talk about the smaller details designers assume you already know.
Learn more about how to read crochet patterns here.
Right Side Vs. Wrong Side of Your Fabric
Knowing the right side (RS) and wrong side (WS) of your fabric is more important than you might think, especially when it comes to texture, colorwork, and shaping.
Here’s how to tell:
- The right side is usually the side facing you when you work the first row after your foundation chain.
- In textured stitches (like bobbles or front-post stitches), the side where the texture “pops” is the right side.
- Unless it is noted otherwise, the right side in crochet projects worked in turned rows is the side of the fabric that faces you on odd-numbered rows.
If you’re not sure, look at the designer’s photos. They’ll show the right side facing out in their sample photos.


Understanding Crochet Gauge (and Why It Matters)
Gauge is one of those things crocheters either love or avoid, but it really does matter.
Gauge tells you how many stitches and rows should fit within a specific measurement, usually 4 inches (10 cm). If your stitches are too small, your project will be smaller than intended. If they’re too loose, it’ll be larger.
Unless your pattern specifically says otherwise, gauge is always measured after blocking. Amigurumi toys are an exception to this rule and given gauge is never blocked.

When Gauge Matters (and When It Doesn’t)
Gauge isn’t just for garments. It matters in a lot of different projects.
- When it matters:
- Any pattern that needs to fit properly. Think hats, sweaters, slippers, mittens, etc.
- When you want your project to turn out a specific size but it doesn’t need to fit something. Think amigurumi toys that you want to be the size listed in the pattern.
- When you have just enough yarn to do your project. The yardage given in patterns is an estimate based off the gauge given in the pattern. Not matching gauge? You may end up needing more yarn than you expected.
- Any pattern that needs to fit properly. Think hats, sweaters, slippers, mittens, etc.
- When it doesn’t matter as much:
- Any project where fit isn’t a concern like amigurumi. A lot of folks say that gauge isn’t important for scarves but they say that because you will have a finished scarf at the end but your scarf may still be too big or too small when not matching gauge.
- Gauge doesn’t generally matter for blankets (as long as you don’t care about size).
- Projects where you have more than enough yarn and size isn’t an issue.
- Any project where fit isn’t a concern like amigurumi. A lot of folks say that gauge isn’t important for scarves but they say that because you will have a finished scarf at the end but your scarf may still be too big or too small when not matching gauge.
That said, checking gauge can still save you time and yarn. Even a small difference can add up quickly over a large project.
How to Make A Gauge Swatch (Even if Your Pattern Doesn’t Include Instructions)
Not every pattern includes a gauge swatch. This is a big area of assumed knowledge. It is generally assumed that you should know how to crochet a gauge swatch by looking at the pattern. But how do you know if no one tells you?
So here’s how to figure it out:
- Look at the stitch used for the majority of your pattern (usually the first couple of rows/round of your project).
- Chain enough stitches to measure about 8 inches wide. The goal here is to create a swatch that is at least 6″ square so chaining more stitches than you need will help you get there easily. You don’t need to know the stitch multiple. Just create a chain 8″ long (or longer if you prefer or the gauge measurement is larger).
- Follow the instructions for the stitch used in your pattern, working down your chain until it is at least 6″ wide.
- Continue the stitch pattern instructions until your swatch measures 6″ tall.
- Block your swatch, then count the number of stitches and rows in a 4″ square in the center of your fabric. Do not measure from the edges to get the most accurate gauge measurement.
If your numbers don’t match what the pattern says, adjust your hook size, go up a size if your swatch is too small, or down if it’s too large.
The standard gauge swatch measurement for most patterns is 4″ x 4″ square however, other standard measurements can be 2″ x 2″, 6″ x 6″, etc. Motifs (or granny squares) typically have their gauge measured as the whole motif rather than a stitch and row measurement.
Want to check your gauge to make sure you measured it correctly? Check out my free Crochet Gauge Calculator here.

Crochet Hook Sizes in Patterns are Recommendations
Every pattern should include the crochet hook size used to create the sample. The listed hook size is the recommended hook size and not a strict rule.
If you find that your stitches are too tight or your fabric feels stiff, try going up a hook size. If your stitches look loose or gappy, try going down a size. Your personal tension may differ from the designer’s, so the right hook for you is the one that achieves the correct gauge and creates the fabric you like.
For projects like amigurumi, where you want dense stitches that hide stuffing, this might mean using a smaller hook than the one listed in the pattern.
Tip: Matching gauge is more important than matching the exact hook size listed in the pattern.
Learn more about crochet hooks in my guide to crochet hooks here or check out my tutorial on how to choose the hook size for your project here.
What Do The Crochet Project Levels/Skill Levels Mean?
Did you know that the Craft Yarn Council provides official guidelines to help standardize crochet pattern skill levels? Experienced designers use these as a baseline when assigning skill levels to their patterns.
Here’s what their standards say:
- Basic / Beginner: Projects using basic stitches. May include simple increases and decreases.
- Easy: Projects may include simple stitch patterns, colorwork, or shaping.
- Intermediate: Projects may include more complex stitch patterns, colorwork, or shaping.
- Complex / Advanced: Projects may include multiple stitch patterns, colorwork, and shaping using a variety of techniques simultaneously.
Of course, how difficult a pattern feels is highly subjective. One crocheter might struggle with tiny stitches on a small hook, while another breezes through complex lace. Think of these skill levels as general guidelines rather than hard rules, just a way to help you gauge what to expect before starting a project.

Final Thoughts on Crochet Standards and Assumed Knowledge
Crochet standards are the foundation that keeps patterns consistent across designers and projects. Once you know them, you can read and follow patterns from anywhere in the world with confidence. These small details, like when a turning chain counts or how gauge really works make all the difference between frustration and success.
Keep this guide handy, share it with a friend, and explore more of my tutorials to build your crochet skills one stitch at a time.
FAQ: Common Crochet Standard Questions
Yes, you can substitute a different yarn as long as it’s a similar weight and fiber type. The most important thing is to match gauge. Always make a gauge swatch first to make sure your stitches and drape match the original pattern. Learn more about how to substitute yarn like a pro here.
Both systems are correct. US hooks are usually labeled with letters (like G or H), while most international hooks use millimeters (mm). Since hook manufacturers can vary slightly, always check the mm hook size when substituting hooks. Many designers will list their hook sizes with both a letter and mm size for your convenience.
“Finished size” is the final measurement of your project after blocking (unless it’s amigurumi or otherwise stated). It’s based on the pattern’s gauge, so your size may differ slightly if your gauge is off.
Not every project needs blocking, but it can help improve the drape and shape of your finished work. It’s most common for garments, blankets, and lace projects. Amigurumi, for example, is a type of project that doesn’t require blocking.
There are a multitude of things that could happen to cause this: you could accidentally skip a stitch, work an extra stitch (or three), etc. Double check your stitch count at the end of your row/round before proceeding to the next. If you can’t figure out where you went wrong, try unravelling your row/round and trying it again.
That’s it! I hope you found this guide to crochet standards helpful and that it gives you more confidence when reading and following crochet patterns.
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