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Friendship Star Quilt Block Pattern

From our Free Quilt Block Patterns Library

Friendship Star quilt block tutorial

Skill Level: Beginner

Grid: 3x3

The classic Friendship Star quilt block is a marvelous place to practice making half square triangles. It takes just four of them plus five cut squares to make it.

In the following tutorial, we use two fabrics, but it works equally well as a scrappy block—just make sure there is a good distinction between the lights and darks so the star points don't disappear.

On this page you'll find instructions to make this block in 5 different sizes. Four common variations on this block are also illustrated.

Did you know that other radically different blocks are called 'Friendship Star'?  Those are pictured, too!

Let's get piecing!

Construction Instructions

Friendship Star quilt block drawing

Block Size: 6"

Grid size: 2"

All seam allowances (SA) are 1/4".

When you are instructed to press, first press the pieced unit flat to set the seam. Then open the patch, pressing from the front. Seam allowances are pressed to the dark fabric unless otherwise noted.

Click here for cutting instructions for additional block sizes.

Step 1: Cut the fabric patches

(polka dot)


Two 2-7/8"(3-1/8") squares**
Four 2-1/2" squares

Two 2-7/8"(3-1/8") squares**
One 2-1/2" square

Patches for the half square triangles are marked with **.

I like to make my HSTs larger than required and trim them to the actual size after stitching. The patches in this tutorial were cut at the number in () to accomplish this. The Quick Piecing method is used to make them.

Step 2: Assemble the Half Square Triangles

Draw a diagonal line on the backs of two 2-7/8" squares with a pencil or other marking tool.

With RST, layer a light square with its dark counterpart, aligning all the edges. Stitch a quarter inch on both sides of the line, and repeat for the second pair of squares.

Stitch HST units

The arrow points to the anchor cloth.

Cut these units in two on the drawn line.


You now have 4 HSTs. If you started with oversized patches (as I did in this tutorial) you'll need to trim them to 2-1/2" square.

For more detailed instructions on making HSTs with this technique, visit Half Square Triangles: Technique #1.

Trimmed HST units

Step 3: Assemble the block

Lay out your HSTs and cut squares as they will be sewn.

Lay out the units in rows

You could turn all the HSTs a quarter turn counterclockwise and your star would
spin in the opposite direction. Either direction is just fine, the choice is yours!

Stitch the units in the rows together. Press with the SAs towards the cut squares and away from the half square triangles. This allows for your seam allowances to nest which makes matching them oh-so-much easier!

Stitch the units into rows

Stitch the rows together.

Stitch the rows together, pin if needed

The arrow points to the anchor cloth.

One final press (don't forget to try out our Best Technique for Pressing Quilt Blocks for amazingly flat finished blocks!) and your Friendship Star quilt block is finished.

The finished Friendship Star quilt block

Common Variations

There are several closely related block variations, each successive one involves just a bit more piecing.

New Home

Very close to the original design except that a third fabric is added.

Simplex Star

Very much like the New Home above, but notice that the HST units are flipped on their vertical access. The corner patches are a darker value.

Nine Patch Star

HSTs are added to the corners in a pinwheel fashion to add movement to the block.

Ribbon Quilt Block

The same units as in the Nine Patch Star above only the corners are all rotated a quarter turn.

Another excellent variation for scrap quilting!

Water Wheel

Four patches are added in the corners along with a 3rd fabric. They make a nice secondary pattern when the blocks are joined edge to edge.

Cutting Chart for Other Block Sizes

If you'd like to over-size your half square triangle patches, they are marked with a **.

Finished Block Size
FabricQty3”4-1/2”7-1/2” 9”
Light** 21-7/8”sq2-3/8”sq3-3/8”sq3-7/8”sq
Dark**21-7/8”sq2-3/8”sq 3-3/8”sq3-7/8”sq
Trim HST to...1-1/2”sq2”sq3”sq 3-1/2”sq
Grid Size1”1-1/2”2-1/2”3”

Same name, different block...

Just like so many of the other basic blocks, 'Friendship Star quilt block' is used to name several others...ones that look nothing like what we made for this page.

Here are three of them...

An intricate looking three fabric block.

On closer inspection you can see it's all basic construction techniques: four patches, Flying Geese, connector corners, and cut squares.

Easy Peasy!

The second Friendship Star quilt block includes y-seam piecing and four fabrics.

Those these first two are, indeed, different, they are similar in appearance. This one will be the more difficult of the two to piece.

Note, too, that this design uses elongated diamonds instead of symmetrical diamonds.

Completely different than the previous two blocks, but still using y-seam piecing, and still called 'Friendship Star'.

Are you seeing stars?

There are star blocks and so much more in our free Quilt Block Patterns Library. Click here to take the first step in your next block-adventure!

Return to the top of our Friendship Star Quilt Block instructions

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