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Make 9 Patch and 16 Patch Quilt Blocks Any Size - No Math - Finished-Size Quilting

16-Page Finished-Size Quilting Booklet (5 MB)

We have two versions of FSQ sets:

  • The Guidelines Ruler version: Comes with 1, 2 or 3 Guidelines Rulers.
  • The Regular version: Use with regular 12" and/or 24" acrylic rulers you already have.

All sets come with:

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Choose this set if you are comfortable cutting strips from the full width of fabric folded twice to four layers.

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Choose this set if you are comfortable cutting strips from the full width of fabric folded twice to four layers but still want the second ruler and connector to make a 6"x 24", 12" Square or Corner Square to square up.  

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Choose this set to be able to make a 6"x 24" to cut strips from the full width of fabric folded once to two layers.

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Choose this set to be able to make a 6"x 24" to cut strips from the full width of fabric folded once to two layers and to make a corner square to square up the Super Easy Way.

All sets come with:

Optional Items:

Grip Strips
to slip-proof your rulers:

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Choose this set if you are comfortable cutting strips from the full width of fabric folded twice to four layers (about 11").

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Choose this set if you you want to slip-proof your 12" ruler and cut strips & squares faster & more accurately using the Quilt Ruler Upgrade Kit.

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Choose this set to cut strips from the full width of fabric folded once to two layers (about 22").

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Choose this set if you you want to slip-proof your 12" and 24" ruler and cut strips & squares faster & more accurately using the Quilt Ruler Upgrade Kit.

Seam Allowance Additions automatically add the exact seam allowances:  

Color-Coded Quilt Block Breakdowns

show what traditional blocks are made of and how the
pieces go together. They show all the squares in purple, half
square triangles in green and quarter square triangles in red.

Pick any finished size and attach the:

  • Purple S Addition for the squares
  • Green H Addition for the half square triangles
  • Red Q Addition for the quarter square triangles

Click on the button below to download an 8-page Seam Allowance Aditions booklet that includes the Breakdowns below:

9-Patch Blocks

16-Patch Blocks

Let's Make a 9-Patch Block First:

This Double Friendship Star is made of nine patches.
5 patches are just Squares and the other 4 are a combination of
Half and Quarter Square Triangles sewn together:

The color-coded breakdown also shows how many
of each piece you will need to make all nine patches:

5 Squares

4 HSTs

8 QSTs

Click the headings below to open. - Click again to close.

What size block do you want to make?

6" Block

9" Block

12" Block

The finished patch size is all you need to make the entire block:

Finished patch size: 2"

Finished patch size: 3"

Finished patch size: 4"

These are common finished sizes for 9-patch blocks like this Double Friendship Star,
but you can pick any size you want.

In Finished-Size Quilting, you can make any 9-patch block finish at 9" using just the 3" line on your ruler.

Finished sizes are that simple:

3" + 3" + 3" = 9"

Simply set the Fabric Guide to the finished patch size: 3”, and let the Seam Allowance Additions automatically add the precise amount of seam allowance for you.

The seam allowance is automatically included when you cut along the edge of the Addition instead of the edge of the ruler.

Seam Allowance Additions not only eliminate the complicated seam allowance math, they also let you make your triangles more accurate than you can using just a ruler alone. *

The S Addition adds a 1/2", which is the exact amount you need for Squares.

Cut five squares.

The H and Q Additons add the precise amount for Half and Quarter Square Triangles. *On a ruler alone, you have to round up to the nearest 1/8" making your triangles less accurate.

Cut two squares &
cut them once diagonally.

Cut two squares &
cut them twice diagonally.

Your Squares, Half and Quarter Square Triangles
will automatically include 1/4" seam allowances all around.

After sewing the pieces together, your block will measure 9 1/2".

(9" finished with a 1/4" seam allowance all around.)

You’ll always have the extra 1/4” you need to sew the pieces, rows and blocks together.

Now Let's Make a 16-Patch Block:

This Royal Star is made of 16 patches.
Four patches are just Squares, four are a combination of Half Square Triangles sewn together and eight are a combination of Quarter Square Triangles sewn together:

The color-coded breakdown also shows how many of
each piece you will need to make all sixteen patches:

4 Squares

8 HSTs

32 QSTs

Click the headings below to open. - Click again to close.

What size block do you want to make?

8" Block

12" Block

16" Block

The finished patch size is all you need to make the entire block:

Finished patch size: 2"

Finished patch size: 3"

Finished patch size: 4"

These are common finished sizes for 16-patch blocks like this Royal Star,
but you can pick any size you want. Click on the heading below to see how:

You can make common sizes by lining up to the 2", 3" or 4" line.
But what if you wanted to make it finish at 9 inches?

Using a ruler alone, making a 16-patch block finish at 9" would be a math nightmare.

In Finished-Size Quilting,
you only need to know the Finished Patch Size:

Click on the heading below to see how simple it is
to make a 16-patch block that finishes at 9":

The S Addition adds a 1/2", which is the exact amount you need for Squares.

Cut five squares.

The H and Q Additons add the precise amount for Half and Quarter Square Triangles. *On a ruler alone, you have to round up to the nearest 1/8" making your triangles less accurate.

Cut four squares.

Cut eight squares.

Cut the squares into triangles first or sew the seams first?  

When you're making patches that are combinations of just Half Square Triangles or just Quarter Square Triangles as in this Royal Star block, you have the choice of cutting the squares into triangles first or sewing the seams first and then cutting them into triangles. See details in the next section.

When making patches like these in the Royal Star block,

2 Half Square Triangles

4 Quarter Square Triangles

You can line the squares up and sew the diagonal seams first to make the 2 HST Patches.

Making the 4 QST patches starts the same but has four more steps:

Repeat the steps above starting with the two new squares you just made:

Cut the squares you made with the H Addition in half diagonally once to make eight half square triangles.

Cut the squares you made with the Q Addition in half diagonally twice to make 32 quarter square triangles.


Every Finished-Size Quilting Set comes with a Prep-Tool, 8-Page booklet and 6-Pack Seam Guides.


If you cut the squares into triangles first, it will be much easier to line them up and sew them together if you pre-trim the points.

HSTs: Use Short Side Trim

Line the Prep-Tool along the short sides of the half square triangles.

QSTs: Use Long Side Trim

Line the Prep-Tool along the long sides of the quarter square triangles

How to Sew the Triangles Together for Both the 9 & 16 Patch Blocks

There are 3 combinations of triangle squares:

Made of 2
half square triangles

Made of 1 half square triangle and 2 quarter square triangles

Made of 4
quarter square triangles


Includes 3-Part Triangle Squares

Includes 2-Part and 4-Part Triangle Squares


2-Part Triangle Squares:

Line 2 HSTs up
right sides together.


Sew together with a
scant 1/4" seam allowance.


Press them open with
the seam to the dark,
purple side.

3-Part Triangle Squares:

Line 2 QSTs up right
sides together & sew.


Line the 2 sewn QSTs up with an HST & sew.


Press them open with
the seam to the dark side.

4-Part Triangle Squares:

Line 2 sets of 2 QSTs up
right sides together & sew.


Line 2 sets of 2 sewn
QSTs up together & sew.


Press them open.

To make sure the points on your triangles stay pointy in your finished block,
you want to sew them together with a scant - slightly less than - ¼” seam allowance.
Click on the next heading below to see how.

Click the headings below to open. - Click again to close.

How to use the Prep-Tool to align the Seam Guide at a Scant ¼” on your sewing machine.

Butt the Prep-Tool up against the needle of your sewing machine on the side with the gold lip edges. Peel the paper off the Seam Guide and butt it up against the other side of the Prep-Tool and stick it down in front of your presser foot.

Remove the Prep-Tool and guide your fabric against the Seam Guide for accurate Scant 1/4" seam allowances.

Every Finished-Size Quilting Set comes with a Prep-Tool, 8-Page booklet and 6-Pack Seam Guides.

See How to Set the Seam Guide to Sew Scant 1/4" Seams:


Making Square in a Square Blocks is Just as Easy: