Tunisian Crochet Mitered Square Tutorial

The Tunisian Crochet Mitered Square is a unique technique that creates a striking diagonal design by starting with a long foundation row and decreasing in the center towards the opposite corner. These decreases pull the long foundation row into a square shape.

These squares can be made in any size and are perfect for blankets, dishcloths, scarves, and any other modular type project.

This is the 6th block in the Country Cottage Tunisian Sampler, our 2026 year-long crochet along. It’s not too late to join the party. You can find all the details you need to get started here.

Every other week throughout the year, a new square pattern featuring a different Tunisian crochet stitch or technique will be released.

Tunisian Mitered Square VIDEO Crochet Tutorial

If you feel stuck and want to see the video, click the photo below. The video shows a smaller version of the square than the written pattern in this post.

Modifying the Size of a Mitered Square

To modify the size of this square, you’ll need to know one thing – how many stitches you want on each side. To figure this out, make a chain a little longer than you need and work a couple of rows in Tunisian simple stitch. Then measure out how many stitches are in the length you want for the side.

Take that number of stitches and multiply it by 2 and then add 1.

Using this strategy, you can make a mitered square in any size you want!

You can also make your squares a solid color or using stripes. For the little square I made in my video tutorial, I changed color at the end of each return pass.

Materials and Pattern Information

• 120 yds worsted weight yarn, I Love This Yarn used in sample
• 6.5 mm Tunisian crochet hook –> My new favorite Tunisian crochet hooks!
• 6 mm crochet hook (for border)
• Scissors + Yarn Needle
• Stitch Marker

Gauge and Sizing

• Gauge:  7 sts x 6 rows = 2 in
  • Worked in pattern stitch
• Finished Size: 12 in x 12 in after blocking

Abbreviations

• US Terminology
• Ch(s): chain(s)
• Yo: yarnover
• Tss3Tog: Tunisian Simple Stitch 3 stitches together, decrease
• Sc: Single crochet
• Sl st: Slip stitch

Special Stitches

Tunisian Simple Stitch 3 Together (TSS3TOG):  Insert hook under next 3 vertical bars, yarnover, pull up loop. 

Last Tunisian Stitch (LTS): Insert hook from right to left under 2 vertical bars at edge of work, yarnover, pull up loop.

Standard Return Pass: yo, pull through 1 loop, *yo, pull through 2 loops, repeat from * across until  1 loop remains on hook.

Notes

• Last loop on the hook after return pass counts as 1st loop of next row forward pass
• Standard return pass will be the same for each row unless otherwise noted. 
• Can be made in any size. Chain any odd number.
• This stitch has some curling
• CAL Video Tutorials Playlist

Tunisian Crochet Mitered Square Written Instructions

Row 1: Ch 71, starting in back bump of 2^nd ch from hook, pull up loop in each ch across. (71 loops on hook). Complete standard return pass. Place marker in center stitch

Row 2: *TSS 33 (or up to bar before marked stitch), tss3tog, Place marker in center of stitch just made. Tss 33, LTS in final stitch. (69 loops). Complete standard return pass. 

Row 3: Tss to bar before marked stitch, tss3tog, move marker up,  tss across until 1 bar remains. LTS in final stitch. Complete standard turn pass. 

Row 4-34:  Repeat row 3. Each row will decrease by 2 loops. Final row will have 5 loops on hook before return pass.

Row 35: tss3tog, LTS in final stitch. (3 loops). Yarnover, pull through all 3 loops. Continue to border. 

Border: Do not finish off. Using 6 mm crochet hook, ch 1, sc evenly around, placing (sc, ch 2 sc) in each corner. Join to top of 1st sc with slst. Finish off, weave in ends. Block to 12 inches. (35 Sc on each side)

Sharing is caring!