Half double crochet (HDC) is one of the most useful basic crochet stitches. It is taller than single crochet, shorter than double crochet, and creates a soft, slightly textured fabric that works beautifully for blankets, hats, scarves, bags, and many beginner-friendly projects.
In this guide, you’ll learn exactly how to half double crochet step by step, how to work HDC into a foundation chain, how to start the next row, how to count your stitches, and how to avoid the most common beginner mistakes.
Quick answer: Yarn over, insert your hook into the next stitch, yarn over and pull up a loop, yarn over again, then pull through all three loops on your hook.
What Is Half Double Crochet?
Half double crochet is a basic crochet stitch abbreviated as hdc in U.S. crochet patterns. It sits between single crochet and double crochet in height.
That middle height gives HDC a useful balance: it works up faster than single crochet but still creates a denser, warmer fabric than double crochet.
Important terminology: This tutorial uses U.S. crochet terms. In U.K. terminology, the same stitch is called half treble crochet (htr).
What You Need
- Medium-weight yarn in a light color
- A crochet hook that matches your yarn
- Scissors
- A yarn needle
- Optional stitch markers
If you are practicing for the first time, choose smooth, light-colored yarn. Very dark, fuzzy, or textured yarn can make it harder to see the top loops of each stitch.
Half Double Crochet Abbreviation
The standard abbreviation for half double crochet is:
HDC = Half Double Crochet
You may also see:
- YO = yarn over
- CH = chain
- ST = stitch
- STS = stitches
How to Half Double Crochet Step by Step
The easiest way to remember the stitch is:
Yarn over → insert hook → yarn over and pull up a loop → yarn over → pull through all three loops.
Step 1: Yarn Over
Wrap the working yarn over your crochet hook from back to front before inserting the hook into the stitch.
This first yarn over is what separates half double crochet from single crochet.
Step 2: Insert the Hook
Insert your hook into the next stitch. Unless a pattern tells you otherwise, place the hook under both top loops of the stitch.
If you are working into a foundation chain, you will usually make your first HDC in the third chain from the hook.
Step 3: Yarn Over Again
Wrap the yarn over the hook again.
Step 4: Pull Up a Loop
Pull the yarn back through the stitch.
You should now have three loops on your hook.
Step 5: Yarn Over One More Time
Wrap the working yarn over the hook again.
Step 6: Pull Through All Three Loops
Pull the yarn through all three loops on your hook in one motion.
You should now have one loop left on the hook. You have completed one half double crochet stitch.
How to Make Your First Row of Half Double Crochet
For a small practice swatch, try this:
- Make a slip knot.
- Chain 14.
- Yarn over.
- Insert your hook into the third chain from the hook.
- Yarn over and pull up a loop.
- Yarn over and pull through all three loops.
- Repeat one HDC in each chain across.
You should finish with 12 half double crochet stitches if your turning chains are not counted as stitches.
How to Start the Next HDC Row
At the end of the row:
- Chain 2.
- Turn your work.
- Yarn over.
- Insert your hook into the first stitch of the previous row.
- Complete one HDC.
- Continue across the row.
For beginners, a simple and consistent method is to use chain 2 as the turning chain and not count it as a stitch. Then work the first HDC into the first real stitch.
Some patterns use a different turning-chain rule, so always follow the instructions in the specific pattern you are using.
How to Count Half Double Crochet Stitches
Look at the top edge of your row. Each completed HDC creates a small V shape.
Each V counts as one stitch.
One of the most common beginner problems is accidentally skipping the first or last stitch. This causes the project to become narrower with every row.
Beginner tip: Place a stitch marker in the first and last stitch of every row until you can identify them easily.
How to Count HDC Rows
Half double crochet creates visible horizontal ridges because of the extra third loop formed by the stitch.
When counting rows, look across the fabric for each horizontal row of stitches. Stretching the swatch gently can make the row structure easier to see.
Half Double Crochet vs. Single Crochet vs. Double Crochet
| Stitch | Height | Fabric | Speed |
|---|---|---|---|
| Single Crochet | Short | Dense and firm | Slower |
| Half Double Crochet | Medium | Soft and moderately dense | Medium-fast |
| Double Crochet | Tall | More open and flexible | Fast |
HDC is often a great choice when you want a fabric that grows quickly without becoming too open.
Where Is Half Double Crochet Used?
You can use HDC in many crochet projects, including:
- Blankets
- Baby blankets
- Beanies
- Scarves
- Cowls
- Sweaters
- Cardigans
- Bags
- Headbands
- Washcloths
- Simple beginner swatches
Common Half Double Crochet Mistakes
1. Forgetting the First Yarn Over
If you insert the hook before yarning over, you are starting a single crochet instead of a half double crochet.
2. Having the Wrong Number of Loops
After you yarn over, insert the hook, yarn over again, and pull up a loop, you should have three loops on your hook.
3. Skipping the First Stitch
The first stitch can hide beside the turning chain. Mark it with a stitch marker if necessary.
4. Adding an Extra Stitch at the End
Beginners sometimes work into the turning chain by mistake. If your pattern says the chain 2 does not count as a stitch, do not crochet into it at the end of the next row.
5. Uneven Tension
Try not to pull the yarn too tightly. Your hook should move comfortably through all three loops.
Beginner Practice Pattern: HDC Swatch
This small practice swatch is a simple way to learn the movement.
Foundation: Chain 14.
Row 1: HDC in the third chain from the hook. HDC in each remaining chain across. Chain 2 and turn. (12 stitches)
Row 2: HDC in the first stitch and in each stitch across. Chain 2 and turn. (12 stitches)
Rows 3–6: Repeat Row 2.
Count your stitches after every row. You should keep 12 stitches throughout the swatch.
How to Make Your HDC Edges Straighter
Straight edges come from consistent stitch counts.
- Count your stitches after each row.
- Mark the first and last stitch.
- Use the same turning-chain method throughout the project.
- Do not accidentally crochet into the turning chain unless the pattern tells you to.
What Is the Third Loop in Half Double Crochet?
Half double crochet creates an extra horizontal loop behind the normal top V of the stitch. This is commonly called the third loop.
Once you are comfortable with standard HDC, you can crochet into this third loop to create a different textured effect that can resemble rows of knitted fabric.
Half Double Crochet FAQ
Is half double crochet easy for beginners?
Yes. HDC is considered a beginner-friendly basic stitch. Once you understand yarn over, inserting the hook, and pulling through loops, the movement becomes repetitive and easy to practice.
What does HDC mean in crochet?
HDC means half double crochet in U.S. terminology.
What is half double crochet called in the UK?
In U.K. terminology, the U.S. half double crochet is called half treble crochet (htr).
How many chains do you turn for half double crochet?
Chain 2 is a common turning chain for HDC. Whether it counts as a stitch depends on the pattern.
Where do I insert my hook for half double crochet?
For a standard HDC, insert your hook under both top loops of the next stitch unless your pattern specifically says to work in the front loop, back loop, third loop, or another location.
Why does my half double crochet keep getting smaller?
You are probably skipping the first or last stitch of the row. Count your stitches and use stitch markers on both edges.
Why is my HDC getting wider?
You may be working an extra stitch into the turning chain or placing two stitches into the same edge stitch.
Final Thoughts
The half double crochet stitch is worth mastering early because it is simple, versatile, and used in a huge range of crochet projects.
Remember the basic rhythm:
Yarn over → insert → yarn over → pull up a loop → yarn over → pull through all three.
Practice a few small rows, count your stitches carefully, and focus on consistent tension. Once the movement feels natural, you will be ready to use HDC in blankets, hats, scarves, bags, and many other patterns.
Next tutorial: Learn how to double crochet step by step.