Half double crochet, often shortened to HDC in US patterns, is a useful stitch that sits between single crochet and double crochet in height. It works up quickly, feels soft and flexible, and is a great next step once you are comfortable making chains and basic stitches.
What you need
- Medium-weight yarn in a light color
- A crochet hook that matches your yarn label
- Scissors
For practice, choose smooth yarn so you can clearly see the top loops of every stitch.
Step 1: Make a foundation chain
Make a slip knot and chain about 15 stitches. Keep the chain relaxed rather than tight. A loose foundation makes it much easier to work the first row.
Step 2: Yarn over before inserting the hook
Wrap the working yarn over your hook from back to front. Unlike single crochet, half double crochet begins with a yarn over.
Step 3: Insert the hook
Insert the hook into the third chain from the hook for a simple practice swatch. Yarn over again and pull up a loop. You should now have three loops on your hook.
Step 4: Pull through all three loops
Yarn over one more time and pull the yarn through all three loops on the hook in one smooth motion. That completes one half double crochet stitch.
Continue across the row
Repeat the same sequence in each chain: yarn over, insert the hook, yarn over and pull up a loop, then yarn over and pull through all three loops.
Starting the next row
Chain one or two stitches depending on the pattern you are following, then turn your work. For practice, use chain one and work the first half double crochet into the first stitch.
How to recognize the stitch
Half double crochet creates a slightly raised horizontal strand across the front of each row. The top of each stitch still looks like a small V. Those V shapes are where you insert the hook on the next row.
Common beginner problems
Your rows keep getting narrower
This usually means the first or last stitch of a row is being skipped. Count your stitches at the end of every row until the edges become easy to recognize.
The fabric feels stiff
Try loosening your grip or moving up one hook size. The yarn should slide comfortably on the hook without being squeezed.
The loops split
Slow down when inserting the hook and aim under both top loops of the stitch. Smooth, light-colored yarn makes this much easier while learning.
Quick practice project
Make a chain of 20 and work 10 rows of half double crochet. This small rectangle can become a mug mat or simply a tension practice swatch. Focus on keeping the same stitch count in every row.
Once half double crochet feels comfortable, you will have another versatile stitch for scarves, hats, blankets and many beginner-friendly projects. For finishing and joining, the next useful technique is Slip Stitch in Crochet.