How to make Mitered Corners

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Mitered corners are a commonly used technique in sewing, yet so many people tend to struggle with it.  Let’s break it down into bite sizes bits and see it in action!




  • a joint made between two pieces of wood or other material at an angle of 90°, such that the line of junction bisects this angle.
  • a diagonal seam of two pieces of fabric that meet at a corner joining.

Origin late Middle English: from Old French, via Latin from Greek mitra ‘belt or turban.’


Learn how to make a mitered corners in 3 easy steps. The Sewing Loft

Mitered Corners


This sewing tip is for all levels.

Skill Level- 1 Button

Mitered corners are easy to create, let’s learn how.

  1. Pinch together each corner of fabric and align the side and bottom seams.
  2. Use a ruler and fabric marking tool to draw a perpendicular line.
  3. Straight stitch on-line.  Trim away corner fabric.

Learn how to make a mitered corners in 3 easy steps. The Sewing Loft

Additional Tips:

  • Use a clear quilting ruler to ensure accuracy.
  • Measure fabric width on both sides of seam.
  • Pin seams together above the sew line to prevent the seams from shifting or becoming misaligned.
  •  Backstitch at start and stop of stitch line.
  • Add a double row of stitching just outside the stitch line for stability.


Mitered corners are perfect for pillows, small zip bags, oversized tote bags and sew much more.

Oversized Bag | The Sewing Loft Zipper Bag Cover Flower Zipper Pouch Pattern. The Sewing Loft

Need more inspiration? Check out the tutorials page or my pattern shop  for easy sewing patterns to keep you in stitches!

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  1. Betty Mary says

    Hello Heather,somehow I get two emails of your blog each time they are sent out,it is a mystery. Hugs marry from Australia

  2. I’m sorry but how do I know how far up to draw the line and stitch to make the mitered corner?

  3. bynanasueSue Staniland says

    surely thats what you do to make the bottom of a bag ? a mitred corner is like going round a quilt with binding or hemming a tablecloth and making mitred corners