Quick Triangles Baby Quilt

If you are looking for a crib-size quilt top that you can piece together in one evening, this half-square triangles quilt pattern is perfect for you. It features 6 fat quarters of assorted fabric prints and large, 8″ x 8″ half-square triangles (HSTs), that you can make 8 at a time.

Finished Quilt Size: 38″ x 53″

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Fabric Requirements:

– 6 fat quarters (18″ x 22″) of coordinating fabric prints
– 5/8 yard white border fabric
– 1 1/2 yards backing fabric
– 3/8 yard binding fabric
– Crib size (45″ x 60″) quilt batting… I like a high-quality crib batting like Warm & Natural (affiliate link)
To get started, break your fat quarters into three sets that match well together. Look at the colors as well as the scale or size of the design.

Spread out and stack two of your fat quarters, and trim to an 18″ x 18″ square.

Now, stack your 18″ x 18″ squares with right sides facing. Mark a diagonal line from corner to corner on one wrong side with a ruler and pen. Pin together the fabric squares at the corners to hold the fabric in place while you sew.

Take your fabric to the sewing machine. With the marked side facing up, stitch a line 1/4″ from the edge of one marked line, to both the left and right of that line. Repeat with the other marked line.
After you’ve stitched the four long lines, notice how the stitch lines go right through the center of the block. With your ruler and rotary cutter, cut the block into four equal quadrants using this center and the block’s straight edges as your guide. For more tricks on making HSTs at a time, visit my guest post at Sew Mama Sew.

Use your ruler and rotary cutter to cut along the line you marked earlier, through the center of your stitched lines. Repeat with the other blocks, and you’ll have 8 half square triangles.

Press the seams open with an iron. This is my Panasonic Cordless Iron (affiliate link) which I love!

Using a square ruler and your rotary cutter, trim each block to 8″ square. Line up the 45-degree line of your ruler with your half square triangle before you cut.

Here are the eight 8″ half square triangle blocks from just two fat quarters. Repeat with the other fat quarters, and you should have 24 total blocks.

Arrange your blocks in a 4×6 grid. I kept my blocks in a set order, with the colors pointing to the upper-left and the grays pointing to the lower-right.

With right sides facing, pin together the blocks in each row and stitch. Press the seams open.
Next, join together the rows with right sides facing, and pin at each seam. Stitch together the rows and press the seams open.

To make the border, cut your border fabric 5″ x the width of fabric, for 4 strips total. Starting in one corner, attach a border strip to the top, then trim the excess. Repeat with the bottom. Stitch the ends of these strips to the other to border strips you’ve cut for the sides, to lengthen them. Press the seams open, then stitch the left and right border strips to the quilt and trim.

Quick Triangles Baby Quilt

Online Quilting Class

Press the seams open. Baste, quilt and bind as desired. After quilting and before binding, I trimmed the borders to 4 1/4″ to keep them even all the way around. This pattern is very beginner-friendly, and I’d recommend it for showing off strong prints. I hope you’ve enjoyed my tutorial, which I originally posted at Sew Lux Fabric!

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  32 comments for “Quick Triangles Baby Quilt

  1. March 6, 2013 at 8:49 am

    The chevron fabric really adds to this little quilt! Makes it look like you’ve pieced them all. Genius!! Nicely done! And it’s a beautiful little quilt. I’ll stash this away for the next quick baby gift. Thanks!

  2. March 6, 2013 at 7:24 pm

    I really like this quilt. I have some fat quarters but I was worried it wasn’t enough for a quilt. But wow, this is a great quilt for it. I sure want to thank you for this. I needed this.

  3. March 7, 2013 at 6:49 pm

    I absolutely love the prints you picked for this quilt — what a great color mix!

  4. Kimmy Phillips
    April 6, 2013 at 8:12 pm

    This is wonderful… simple… I have a few Baby Quilts to make.. this will work Great..
    I always think I have to do something difficult and then I get discourage.. . But this will work great.. I will have to share with you when I get them done..

  5. Katy
    August 2, 2013 at 3:44 pm

    oooh this is wonderful, I love the calm colors in the fabric and the simple construction that makes a big impact! will definitely be making this with the new fabric I just bought- thanks for the tutorial! :)

  6. August 29, 2013 at 6:54 pm

    Hi Lindsay, Love Love this tutorial! I’ve linked to you in my blog post here:



  7. Sumé
    September 5, 2013 at 3:07 pm

    Had 12 fat quarters, so started up last night…and the top is done! 6 x 8 blocks, so double the size…Just have to add borders…This will be my first quilt if I complete it!! Wish me luck…

  8. Jessica
    October 11, 2013 at 7:30 am

    Great tutorial. Thank you! I’m working on my quilt now!

  9. Meghan
    January 24, 2014 at 3:52 pm

    I’m working on this right now for a friend and it’s been really easy and looks so cute! Thanks for the simple, straightforward tutorial! Can’t wait to get it done and surprise my friend with it!

  10. April 2, 2014 at 11:18 pm

    Thanks so very much for this simple straightforward tute. I appreciate that you reblogged it from Sew Luxe; I have some perfect prints for it and I like that it can be sized to however many blocks is needed. Perfect-thanks , no really-thanks….

  11. Suzi
    July 5, 2014 at 11:05 am

    I made this for my best friend’s first grandchild last year, and now that her other daughter is expecting, I will definitely be doing it again! I also used this technique to do a rag quilt. Thank you so much for this tutorial.

  12. Linda
    September 30, 2014 at 5:27 pm

    Dear Lindsay, I love your quick triangles baby quilt and have a bunch of fat quarters that I would love to use.
    However as i started to measure them, some were only 17 inches wide. Is there a way that I can make the quilt using a smaller size square of fabric like a 16 inch square? I would truly appreciate your help. Thanks, Linda Steinhart

    • September 30, 2014 at 6:13 pm

      Hi Linda! Yes, you can start with any size of square. I chose 18″ to get the largest square possible, but you can certainly make yours 16″ or 17″. You’ll just want to follow the directions and measure your HSTs to find out what size to trim them. Yours will be a little smaller than mine, but not much. :) You can add a wider border if you’d like!

      • Linda
        October 2, 2014 at 9:53 pm

        Thank you so much.

  13. Anouk
    October 1, 2014 at 1:40 pm

    I did it and its wonderful, but the border I cut is not enough for the sides, its too short. What did I miss here? I cut 5/8 yards which is 22.5 inches. No clue what could have happened and now I am afraid to cut again I don’t want to keep cutting white fabric.

    • October 1, 2014 at 2:05 pm

      Hi Anouk! I cut 5″ strips from the sides, so that makes approximately 40″ long for each 5″ strip (from the 5/8 yard). I pieced together some of the pieces to make longer side strips, since those aren’t long enough on their own. If you look at the photo, you’ll see that the top and bottom are shorter, so you can cut a bit off of those to make the sides longer. Hope this helps!

  14. Penny
    February 24, 2015 at 1:36 am

    Absolutely love this baby quilt and as a beginner it looks so simple.
    Thanks for the tutorial, it was very easy to understand and I can’t wait to make this!

  15. Carla
    March 30, 2015 at 2:49 pm

    How did you quilt this? Thanks!

    • April 1, 2015 at 12:36 pm

      Free-motion meandering stitch!

  16. Elva Y. Derby
    April 27, 2015 at 5:35 pm

    I really want to get the instructions for your -Asymmetrical Wedding Quilt-but it led me to this Quilt-which is a very nice Quilt-but I would love to be make the one in the yellow and gray Wedding Quilt-would you please be so kind as to help me-my sincere thank you-EYD

  17. Rox-quilts
    October 10, 2015 at 11:13 am

    I tried this in early Spring, it was wonderful. I read and re-read you instructions, It was MY first patterned quilt, it turned out Amazing, I’ve done 3 more this year since, using different prints and bold, bright colors makes this thing POP! I actually love making the ‘easy’ squares. Thank you for the wonderful inspiration.

    • October 18, 2015 at 11:17 am

      So fun! Thanks for sharing your success!

  18. Cat
    January 5, 2016 at 10:53 pm

    Absolutely saving this tutorial! I made a baby blanket using pinks, greens, and teals with a grey fleece backing.

    My friend cried when she took it out of the bag, saying I shouldn’t have spent so much money on it. When I told her I made it, she started crying more and laid it across her belly and hugged it.

    Thank you SO much, Lindsay!

  19. February 11, 2016 at 9:11 pm

    Hi Lindsay,
    This is my first quilt and I have a stupid question. Are the squares trimmed to 8″ or 8 1/4″ to allow for the seams, so that the finished squares are 8″ after they are sewn together?

    • February 11, 2016 at 9:14 pm

      Hi Eileen! The squares are trimmed to 8″ so that they are 7 1/2″ when sewn (1/4″ seam allowance on each side). Good question!

  20. Islay1150
    February 13, 2016 at 12:07 pm

    Thank you. The instructions are so clear. I was able to complete my first baby quilt following yor instructions! Amazingly easy to do!!!!

    • February 13, 2016 at 4:06 pm

      Great! I’m so glad to hear it!

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