Triangle Baby Quilt Pattern
If you’re looking for a simple quilt that looks more complicated than it actually is, this Triangle baby quilt pattern is a great project to try. The block is made with basic squares and triangles, making it a good choice for a beginner quilter who wants to practice accurate cutting, sewing, and pressing. The finished design has a beautiful geometric look, with a large center square surrounded by triangles and framed with four corner squares.
This baby quilt uses four coordinating fabrics, so it’s also a fun way to play with color and fabric placement. You can use a combination of solids, plaids, florals, or novelty fabrics depending on the look you want. A magnetic seam guide can be especially helpful for keeping your ¼-inch seams consistent as you sew the blocks together.
Each unfinished quilt block measures 8½ x 8½ inches. The baby quilt shown here uses 30 blocks arranged 5 blocks across and 6 blocks down, creating a finished quilt top measuring approximately 42½ x 51 inches. It’s a practical size for a baby quilt and can easily be customized by adding more or fewer blocks.
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Materials
For one 8½-inch unfinished quilt block:
- ½ yard Fabric A – plaid or coordinating print
- ½ yard Fabric B – dark blue solid
- ⅝ yard Fabric C – light blue
- 1¼ yards Fabric D – dark blue marbled or solid for the center
- ½ yard binding
- 1⅝ yards of 44-inch-wide fabric for backing
- Batting
- Coordinating thread
- Sewing machine
- Rotary cutter and ruler
- Cutting mat
- Iron and pressing surface
- Magnetic seam guide, optional but helpful
- Pins or clips
For the complete 30-block baby quilt, you will need enough fabric to make all 30 blocks. The fabric amounts above are the amounts listed for the quilt pattern.
Free Sewing/Quilting Community (free patterns)
Cutting Instructions
Fabric A
Cut:
- 2 squares, 2¼ x 2¼ inches
- Cut each square diagonally twice to create 4 triangles
These become the four A corner pieces.
Fabric B
Cut:
- 4 squares, 4½ x 4½ inches
- Cut each square once diagonally to create 8 triangles
These triangles will be used to make the B-C-B units.
Fabric C
Cut:
- 2 squares, 3 x 3 inches
- Cut each square once diagonally to create 4 triangles
These are the four C pieces surrounding the center.
Fabric D
Cut:
- 1 square, 4½ x 4½ inches
This is the center of the quilt block.
Tip: If your Fabric D has directional animals, words, or another directional print, pay attention to the orientation when cutting and assembling the center.
How to Sew the Triangle baby Quilt pattern Block
Step 1: Make the B-C-B Units
You will make 4 identical B-C-B units.
Arrange the pieces like this:
B – C – B
The C triangle should be in the center, with a B triangle on each side.
Sew the pieces together using a ¼-inch seam allowance.
Press the seams.
You should now have four B-C-B units.
Step 2: Add the B-C-B Units to Fabric D
Place two B-C-B units on opposite sides of the 4½ x 4½-inch Fabric D center square.
Sew one B-C-B unit to the top of Fabric D and one to the bottom.
Press the seams.
You now have the center unit of your quilt block.
Step 3: Make the A-B-C-B-A Units
Take the remaining two B-C-B units.
Add one Fabric A triangle to each end of each B-C-B unit.
The arrangement should be:
A – B – C – B – A
Make 2 A-B-C-B-A units.
Press the seams.
Step 4: Complete the Block
Sew one A-B-C-B-A unit to each side of the center unit.
Carefully match the seams at the points where the units meet.
Press the completed block.
Your finished block should measure approximately:
8½ x 8½ inches unfinished
Optional Pattern PDF for Triangle baby Quilt pattern
Making the Triangle Baby Quilt Pattern
For the baby quilt shown in this pattern, you will need:
30 quilt blocks
Arrange the blocks:
- 5 blocks across
- 6 blocks down
Before sewing, lay all of your blocks out and check the orientation of the blocks and fabric patterns. This is especially important if you are using directional fabrics.
Step 1: Sew the Rows
Starting with the first row, place two blocks right sides together.
Sew along the adjoining edge using a ¼-inch seam allowance.
Press the seam.
Add the third block to the first two, right sides together, and sew with a ¼-inch seam.
Continue until you have 5 blocks joined together.
Repeat this process to make 6 rows, each containing 5 blocks.
You should now have:
- Row 1: 5 blocks
- Row 2: 5 blocks
- Row 3: 5 blocks
- Row 4: 5 blocks
- Row 5: 5 blocks
- Row 6: 5 blocks
Step 2: Press the Rows
For easier nesting of seams when joining the rows, press the seams in alternating directions:
- Row 1 – press seams to the right
- Row 2 – press seams to the left
- Row 3 – press seams to the right
- Row 4 – press seams to the left
- Row 5 – press seams to the right
- Row 6 – press seams to the left
This allows the seams between rows to nest together.
Step 3: Join the Rows
Place Row 1 and Row 2 right sides together, carefully matching the seams between the blocks.
Pin at the block intersections if desired.
Sew the entire length using a ¼-inch seam allowance.
Press the seam.
Add Row 3 to the bottom of Row 2 and continue until all six rows are joined.
Give the completed quilt top a final pressing.
The finished Triangle baby Quilt pattern quilt top should measure approximately:
42½ x 51 inches
The exact measurement may vary slightly depending on pressing and seam accuracy.
Quilt Sandwich for your Triangle baby Quilt pattern
Once your quilt top is complete, prepare the batting and backing.
Cut your batting slightly larger than the quilt top. You can get the exact match with our quilt backing calculator
Cut your backing slightly larger than the quilt top.
Layer the Triangle baby Quilt pattern:
- Backing – wrong side up
- Batting
- Quilt top – right side up
Baste the layers together using your preferred method.
Quilt as desired. You can quilt straight lines, free-motion quilt, or use a simple overall design.
Binding for Triangle baby Quilt pattern
Use your solid blue fabric for the binding or whatever color you want.
For a traditional 2¼-inch double-fold binding, cut your binding strips 2¼ inches wide. Confirm your amount of fabric by measuring your finished quilt and putting your measurements in our Quilt binding calculator
Join the strips together to create one continuous binding strip.
Press the binding in half lengthwise.
Attach the binding to the quilt using a ¼-inch seam allowance.
Wrap the binding around to the back of the quilt and hand-stitch or machine-stitch it in place.
Give your finished quilt a final pressing.
Frequently Asked Questions
What size is the finished baby quilt?
The quilt top measures approximately 42½ x 51 inches when made with 30 blocks arranged 5 across by 6 down.
How big is each quilt block?
Each block is 8½ x 8½ inches unfinished.
How many blocks do I need for the baby quilt?
You need 30 blocks for the quilt shown in this pattern.
Is this a good quilt pattern for beginners?
Yes. The block uses basic squares and triangles and does not require complicated piecing techniques. Accurate cutting and maintaining a consistent ¼-inch seam allowance will help your blocks fit together properly.
Do I need a magnetic seam guide?
No, it is optional. However, a magnetic seam guide can be helpful for beginners because it provides a physical guide for maintaining a consistent ¼-inch seam allowance.
Can I make this quilt with different fabrics?
Absolutely. The design would work well with solids, florals, children’s prints, seasonal fabrics, or scraps. Just choose fabrics with enough contrast so the triangles and center square remain visible.
Can I make the quilt larger?
Yes. Simply make additional blocks and arrange them into additional rows and columns. Keep in mind that changing the number of blocks will change the amount of fabric, batting, and backing you need.
Can I use directional fabric for the center?
Yes, but pay attention to the orientation when cutting and assembling Fabric D. Directional prints can be especially fun in the center square, but you’ll want the design facing the correct direction.
What seam allowance should I use?
Use a ¼-inch seam allowance throughout the quilt piecing and when attaching the binding.
Fabric Giveaway
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