How to Sew a Box Cushion

    by Heide Braley

    About the Author

    Maryland resident Heide Braley is a professional writer who contributes to a variety of websites. She has focused more than 10 years of research on botanical and garden articles and was awarded a membership to the Society of Professional Journalists. Braley has studied at Pennsylvania State University and Villanova University.


    There are so many practical uses for box cushions. They can be used for a window seat, for a bench seat, for couch cushions or just regular kitchen chair cushions. The name comes from their square box shape as opposed to the rounded edge of other cushions. Knowing how to make your own is handy when you are making custom fit cushions for your redecorating project.

    Things You'll Need

    • Cushion form
    • Tape measure
    • Cloth
    • Sewing machine
    • Thread
    • Pins
    • Iron

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    Measure the width and length of the cushion. Measure the width as the distance from left to right and length as the distance from top to bottom or front to back. Add one half inch on each side and cut two pieces of fabric to these measurements.

    Add two times the length and two times the width plus 1 inch for the length of the boxing strip. You may need to sew several pieces together to achieve the correct length. Cut the strip width equal to the thickness of the cushion plus 1 inch.

    Sew the strip together along the short ends, forming a continuous strip.

    Pin one long edge of the boxing strip to the perimeter of one cushion piece, right sides together. Sew around the perimeter with a 1/2-inch seam allowance. Keep the needle in the fabric at the corners, lift the tension foot on the sewing machine and swing the fabric to sew the next side.

    Sew the remaining edge of the boxing strip to the perimeter of the remaining cushion piece. Leave one width edge unsewn. Turn the cover right side out.

    Insert the foam into the cover. Line it up so that the corners all sit neatly. Slip stitch the opening closed.

    • Insert a zipper in one width seam for ease when changing the cover.
    • Pre-launder the fabric to prevent shrinkage later.

    Photo Credits

    • Comstock Images/Comstock/Getty Images