How to Make the Ohio Star Quilt Block

This year, for the quilt guild I am apart of, I am providing instructions for how to make a different quilt block each month. For the month of December, we learned about the classic Ohio Star Quilt Block. 

 Ohio Star Quilt Block

This is a very classic block that great for everyone to know how to do. 

For a 12 inch finished block (12.5 inch unfinished), you will need to cut the following:

White  4 of 3 1/2 inch squares

White  6 of 4 inch squares

Color  6 of 4 inch squares


Using the 4 inch squares, place a white square and a color square right sides together. Draw a line diagonally, corner to corner on the white fabric. 

Stitch a scant 1/4 inch away from the line on both sides. 

 Half Square Triangle

Cut on the line and press the seam to the dark side. 

Trim to 3 1/2 inches square.

Half Square Triangle HST

Repeat till you have 12 half square triangles. 

Arrange the half square triangles and the 3 1/2 inch white squares to match the layout of the square. 

Stitch blocks together to form rows. Press to alternating sides. Then stitch rows together and give an overall final pressing. 

Ohio Star Block 

If you have any questions, please leave a comment below! 

Check back each month for a new How-To of quilt blocks! To see the other blocks, just search my blog for Quilt Guild Block of the Month.

If you would like a PDF version of these instructions, please check out Group #2 of the How-To Block of the Month Downloads.

This is classic block that has been designed and created by many people. As I have mentioned before, these block designs come from the book 5500 Quilt Block Designs by Maggie Malone. (c) 2003 but these instructions are written by me.) 

Have fun quilting!


  • Hi Deann! Thanks for asking. The center block should measure 6 1/2 inches square after you sew the 4 HSTs together.

  • In the Ohio Star block it gives instructions for the hall sq triangles and how to sew to the squares but dies. It tell how or what size to make the center block. Please advise.

    Deanna Cook
  • Hi Dee!
    Sorry about the struggles! I double checked the measurements and they are correct. The inch squares are to make the HSTs that will be trimmed down to 2 inches square. The four 2 inch squares are for the corner blocks. Hope that helps! Thanks!

  • The first 6" star measurements are wrong. I found that out when I was trying to sew the 2" squares onto a 3 1/2" square. You might want to go back and change that posting or delete before others like myself, cut up a stack of 2" squares. :/

  • Hi Phyllis!
    In the previous comments I showed how to calculate measurements for your own sizes. Thanks for asking!


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