Triangle Shape Filet Square Free Crochet Pattern

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This adorable triangle shape filet square crochet pattern is a great easy pattern using double crochet stitches and chain spaces. The flat back and forth design is easy and fun to create for advanced beginners to easy skill level crocheters. The pattern features written directions as well as a stitch diagram. This filet square is perfect to use as part of a blanket, a washcloth, or anything else you can think of!

This heart shape square is one of six shapes created for a Shapes and Blocks Baby Blanket. The other shapes include a star, a circle, a square, a diamond, and a heart.

I have put a neutral colored border, different from the main square to make the edges nicer and easier to sew into a blanket. You might choose to add the border in the same color as the square, or skip it altogether! There is no wrong way to do it.

photo of finished blanket with triangle shape filet square crochet pattern included
This is the finished Shapes & Blocks Baby Blanket of which this triangle square is part

About The Filet Stitch

Filet crochet is a method where a stitch (usually double crochet) is used in combinations with chain stitches to create a pattern of either a solid background with a shape done in chain spaces or a chain space background with the shape done in double crochets. It is an easy type of crochet to grasp, but it is important to understand that the chain spaces and the tops of the stitches are worked the same way.

Click Here If You Would Like An Additional Tutorial on Filet Crochet

Yarn to Use

For this series of shape filet crochet patterns I used Simply DK Paintbox yarns, they are a size 3, light, or DK labeled yarn. This yarn is perfect for a baby blanket because it is light and has a wonderful selection of colors!

You could use a #4 worsted weight yarn if you choose, but don’t forget to size up your hook too. If you do this your finished square will be larger than the dimensions I have given.

Hook to Use

The recommended hook for the Paintbox Simple DK yarn is a 4 mm G6 size hook. That is what I used to create the triangle shape filet square.

I like Susan Bates In-Line Hooks, such as the one you can purchase here.

full set of susan bates polymer clay handle aluminum crochet hooks with multi-colored flowers and text overlay

The gauge you get with this hook is somewhat important. If your gauge for this project is off from what I have given your square may look a bit more spaced out or scrunched together.

I always recommend checking gauge, especially because it may effect how much yarn you need to complete the project. But if you are not concerned with this, use whatever hook gives you your desired appearance.

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Triangle Shape Filet Square Crochet Pattern Details

Skill Level

Easy: Knowledge of foundation, chain, double crochet stitches, and working into a chain space.

Finished Size

7.5” tall x 7” wide

Gauge

17 DC x 12 rows = 4 in wide X 4 in tall

Materials

Stitches & Abbreviations

Pattern Notes

This pattern is flat in a back and forth motion. There is no “right side” or “wrong side” for this pattern, the finished square will look the same from both sides.

Each row has 31 stitches in it. The chain spaces count as a stitch.

The chain 2 stitches at the start of each row do not count as a stitch.

This pattern can be started in 1 of 2 ways. The first way listed uses foundation double crochet stitches in row 1. An alternative to start this pattern is to create a chain and then work a row of double crochet in that chain. See the row directions for more information.

See the stitch diagram at the bottom of this post for more information.

Triangle Shape Filet Square Crochet Pattern

Row 1. Work 31 FDC.

(Alternate Row 1. Ch 33. Turn and DC in the 3rd ch from the hook and in each st to end. Remember the first 2 chains don’t count as a st. 31 DCs).

Row 2. & 3. Ch 2 and turn. DC in each st to end.

Row 4. Ch 2 and turn. DC in next 2 sts. *Ch 1, Sk 1. DC in next 1 st. Repeat from * a total of 14 times. DC in last st.

Row 5. Ch 2 and turn. DC in next 3 sts. Ch 1, Sk 1. DC in next 23 sts. Ch 1, Sk 1. DC in next 3 sts to end.

pattern after first 5 rows are completed

Row 6. Ch 2 and turn. DC in next 4 sts. Ch 1, Sk 1. DC in next 21 sts. Ch 1, Sk 1. DC in next 4 sts to end.

Row 7. Ch 2 and turn. DC in next 5 sts. Ch 1, Sk 1. DC in next 19 sts. Ch 1, Sk 1. DC in next 5 sts to end.

Row 8. Ch 2 and turn. DC in next 6 sts. Ch 1, Sk 1. DC in next 17 sts. Ch 1, Sk 1. DC in next 6 sts to end.

Row 9. Ch 2 and turn. DC in next 7 sts. Ch 1, Sk 1. DC in next 15 sts. Ch 1, Sk 1. DC in next 7 sts to end.

Row 10. Ch 2 and turn. DC in next 8 sts. Ch 1, Sk 1. DC in next 13 sts. Ch 1, Sk 1. DC in next 8 sts to end.

Triangle shape filet square crochet pattern after first 10 rows are completed.

Row 11. Ch 2 and turn. DC in next 9 sts. Ch 1, Sk 1. DC in next 11 sts. Ch 1, Sk 1. DC in next 9 sts to end.

Row 12. Ch 2 and turn. DC in next 10 sts. Ch 1, Sk 1. DC in next 9 sts. Ch 1, Sk 1. DC in next 10 sts to end.

Row 13. Ch 2 and turn. DC in next 11 sts. Ch 1, Sk 1. DC in next 7 sts. Ch 1, Sk 1. DC in next 11 sts to end.

Row 14. Ch 2 and turn. DC in next 12 sts. Ch 1, Sk 1. DC in next 5 sts. Ch 1, Sk 1. DC in next 12 sts to end.

Row 15. Ch 2 and turn. DC in next 13 sts. Ch 1, Sk 1. DC in next 3 sts. Ch 1, Sk 1. DC in next 13 sts to end.

Project after 15 rows are completed.

Row 16. Ch 2 and turn. DC in next 14 sts. Ch 1, Sk 1. DC in next 1 st. Ch 1, Sk 1. DC in next 14 sts to end.

Row 17. Ch 2 and turn. DC in next 15 sts. Ch 1, Sk 1. DC in next 15 sts to end.

Row 18.- 20. Ch 2 and turn. DC in each st. Tie off at the end of row 20 and weave in ends.

Triangle Filet Square after all 20 rows are completed.
Project with ends woven in.

Optional Border

Attach new yarn to hook. Work 3 single crochets in each corner space, and 29 single crochets spaced evenly across each edge.

Triangle Shape Filet Square Crochet Pattern with contrasting color border.

Stitch Diagram

Stitch diagram for triangle shape filet square crochet pattern

I hope you enjoyed my Triangle Shape Filet Square Crochet Pattern! Check out the links below for more awesome shapes to make!!

Heart Shape Filet Square Crochet Pattern

Star Shape Filet Square Crochet Pattern

Square Shape Filet Square Crochet Pattern

Circle Shape Filet Square Crochet Pattern

Diamond Shape Filet square Crochet Pattern

Shapes & Blocks Baby Blanket Crochet Pattern

Happy Hookin’

Caitlin's Contagious Creations. Spread the creavitity. Crafting and crochet projects, patterns, and more!

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