How to Sew a Perfect Right Angle Corner

by Leanna Levine | Last Updated: March 1, 2017

Perfect Right Angle Seams – Step by Step

It doesn’t happen often, but there may come a time when you need to sew a right-angle seam. So when you’re faced with this tricky challenge, try this method, and you’ll come away feeling like a champ.

Cut your fabric and lay out both pieces right side up.


Pin one side of the angle right sides together lining up the edge that’s away from the angle corner. At the angle, you should have an overlap about double the seam allowance.


Using shortened straight stitches, sew the seam up to the point where the seam allowances meet past the angle corner. Use a marking pencil to mark the place where you need to stop so you don’t have to guess.


Snip the bottom layer (where the angle is cut) up to the stitching. Be careful not to cut the stitches.




Now pin the other side edges right sides together. You’ll have a fold in the fabric on the bottom.






Starting at the edge away from the corner, stitch toward the corner point. Slow down when you’re close so you don’t overshoot the point where you meet the first stitching line. Be extra careful not to catch the fabric fold in your stitches. Run your machine slowly and you’ll do fine.




Press the seams toward the outside edges. If you see a little pucker, you can fix that by carefully snipping a little closer to the stitching on the wrong side.




And there you have it. You’ve made a perfect right-angle seam!