
A half double crochet decrease (hdcdec) is a technique that is used to join two half double crochet stitches together to make one half double crochet stitch. The term half double crochet two together (hdc2tog) is also used to describe this same technique. Both terms, half double crochet decrease and half double crochet two together, mean the same thing and can be used interchangeably. When working a half double crochet decrease, two half double crochets are joined together, hence half double crochet two together. Joining two half double crochets together decreases down to one half double crochet stitch, hence half double crochet decrease. This tutorial demonstrates step-by-step instructions on how to half double crochet decrease.
Supplemental Tutorials:
- Beginner Crochet: How to Make a Slipknot
- Beginner Crochet: How to Crochet a Chain (ch)
- Beginner Crochet: How to Half Double Crochet (hdc)
Terms used:
- working yarn: the strand of yarn coming from the skein(ball)
- yarn over (yo): wrapping the yarn over the crochet hook
- turning chain: is used to begin a row/round of crochet by ‘lifting up’ the work. Each stitch requires its own number of chains to start off with, which is determined by the height of the stitch.
Step-by-Step Instructions:
Tutorial Sections:
- How to Half Double Crochet Decrease (hdc)
- Video Tutorial
1. How to Half Double Crochet Decrease (hdcdec)
This tutorial is being demonstrated after the completion of two rows of six half double crochet and a turning chain of two.


- Yarn over.
2. Insert the hook into a stitch.


3. Hook the working yarn.
4. Pull the working yarn through the stitch. Three loops will remain on the hook.


5. Yarn over.
6. Insert the hook into the next stitch.


7. Hook the working yarn.
8. Pull the working yarn through the stitch. Five loops will remain on the hook.


9. Yarn over.
10. Pull the working yarn through all five loops on the hook. One loop will remain on the hook.
This completes a half double crochet.


This image shows a total of three half double crochet decreases completed. The row started with six half double crochets and was reduced down to three half double crochets. Each half double crochet decrease reduced from two stitches down to one. There were three decreases made, resulting in three stitches removed. 6-3=3, three stitches remain.
