Easy Knitted Mitred Square — Quick Diagonal Square Pattern for Blankets & Coasters
The knitted Mitred Square is a quick, satisfying small project that produces a neat diagonal design. Worked in garter stitch (knit every row), the square is formed by centered decreases that create a striking diagonal seam. These squares are perfect for stash-busting, making blankets, cushions, scarves, or individual coasters — and they’re great for knitters of all skill levels.
Materials: yarn of your choice, needles appropriate for that yarn, stitch marker, tapestry needle for finishing. Choose any yarn/needle combination that gives you the fabric you want — DK, worsted or aran all work; adjust needle size accordingly.
Stitches used:
- k – knit
- ssk – slip, slip, knit (left-leaning decrease)
- k2tog – knit two together (right-leaning decrease)
Written pattern:
Cast on: Using your preferred cast-on method (long-tail cast-on works well), cast on an EVEN number of stitches.
Row 1 (Right side): Knit half your stitches, place stitch marker, knit remaining stitches. Turn.
Row 2 (Wrong side): Knit to 2 stitches before marker, k2tog, slip marker, ssk, knit remaining stitches. Turn.
Repeat Rows 1 and 2 until only 2 stitches remain.
Final row: k2tog, break yarn leaving a tail and pull through last stitch to fasten off. Weave in ends with a tapestry needle.
Notes & tips:
- This pattern is worked in garter stitch (knit every row), so the fabric will be squishy and reversible.
- Keep an even tension on decreases so the diagonal line stays neat.
- To make larger or smaller squares, cast on more or fewer stitches (always an even number) and follow the same decrease sequence.
- Join multiple mitred squares using mattress stitch, whipstitch, or a crochet join. Arrange diagonals for different visual effects.
- Block squares lightly if desired to even out stitches and make joins easier.
Variations:
- Change color at any point (carry yarn or weave in ends) to make striped or half-and-half mitred squares.
- Use different yarn weights or needle sizes to create a textured patchwork of varying drape and thickness.
Enjoy knitting — these squares are quick to make and endlessly customizable!