Square in a Square quilt pattern

8" blocks: scrappy squares with a stitch-and-flip triangle on every corner, set side by side so the corners meet in on-point squares.

The queen size is 88" × 112" with 130 blocks. Each size below has its own fabric list, cutting and backing, worked out for 42" fabric with ¼" seams, 10% extra and yardage rounded up to the next ¼ yard.

Square in a Square quilt sizes
Size	Finished	Blocks	Top fabric
Crib	48" × 64"	35	7¼ yd
Throw	64" × 72"	56	10¼ yd
Twin	72" × 88"	80	13 yd
Full	88" × 96"	110	17¼ yd
Queen	88" × 112"	130	20 yd
King	112" × 112"	169	25 yd

The Square in a Square block page has the cutting for single blocks in four sizes and the piecing step by step, with a drawing of every unit.

Square in a Square quilt, queen size, 88" × 112" — Queen, 88" × 112"

Crib Square in a Square quilt, 48" × 64"

35 blocks of 8", 7 rows of 5, 4" border.

Square in a Square quilt, crib size, 48" × 64"

Fabric for the crib size
	Main, BorderTeal geometric	1½ yd
	BackgroundCream solid	2¼ yd
	Main4 fabrics, scrappy	2¾ yd total
	Main, BindingCoral dots	¾ yd
	Backing2 panels 56" long, seams across; or 1¾ yd of 108" wide	3¼ yd
	Batting72" × 90"	Twin

Cutting

Main, Border: Cut 3 strips 8½" × WOF. Subcut 9 squares 8½". Cut 5 strips 4½" × WOF. Join end to end. Cut 2 at 56½" and 2 at 48½".
Background: Cut 16 strips 4½" × WOF. Subcut 140 squares 4½" for the stitch-and-flip corners.
Main, from each of the 4 fabrics: Lime stripe: Cut 2 strips 8½" × WOF. Subcut 6 squares 8½". Aqua swirl: Cut 2 strips 8½" × WOF. Subcut 6 squares 8½". Big bloom: Cut 1 strips 8½" × WOF. Subcut 4 squares 8½". Mustard crosshatch: Cut 2 strips 8½" × WOF. Subcut 6 squares 8½".
Main, Binding: Cut 1 strips 8½" × WOF. Subcut 4 squares 8½". Cut 6 strips 2½" × WOF. Join into one 236" strip.

Putting it together

Make 35 Square in a Square blocks, 8" finished (8½" with seam allowance). That takes 35 stitch-and-flip units.
Lay out the blocks in 7 rows of 5. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
Layer the backing (56" × 72"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

Throw Square in a Square quilt, 64" × 72"

56 blocks of 8", 8 rows of 7, 4" border.

Square in a Square quilt, throw size, 64" × 72"

Fabric for the throw size
	Main, BorderTeal geometric	1¾ yd
	BackgroundCream solid	3½ yd
	Main4 fabrics, scrappy	3¾ yd total
	Main, BindingCoral dots	1¼ yd
	Backing2 panels 72" long, seams across; or 2 yd of 108" wide	4 yd
	Batting72" × 90"	Twin

Cutting

Main, Border: Cut 3 strips 8½" × WOF. Subcut 12 squares 8½". Cut 7 strips 4½" × WOF. Join end to end. Cut 2 at 64½" and 2 at 64½".
Background: Cut 25 strips 4½" × WOF. Subcut 224 squares 4½" for the stitch-and-flip corners.
Main, from each of the 4 fabrics: Lime stripe: Cut 3 strips 8½" × WOF. Subcut 9 squares 8½". Aqua swirl: Cut 3 strips 8½" × WOF. Subcut 12 squares 8½". Big bloom: Cut 3 strips 8½" × WOF. Subcut 9 squares 8½". Mustard crosshatch: Cut 2 strips 8½" × WOF. Subcut 8 squares 8½".
Main, Binding: Cut 2 strips 8½" × WOF. Subcut 6 squares 8½". Cut 7 strips 2½" × WOF. Join into one 284" strip.

Putting it together

Make 56 Square in a Square blocks, 8" finished (8½" with seam allowance). That takes 56 stitch-and-flip units.
Lay out the blocks in 8 rows of 7. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
Layer the backing (72" × 80"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

Twin Square in a Square quilt, 72" × 88"

80 blocks of 8", 10 rows of 8, 4" border.

Square in a Square quilt, twin size, 72" × 88"

Fabric for the twin size
	Main, BorderTeal geometric	2¼ yd
	BackgroundCream solid	5 yd
	Main4 fabrics, scrappy	4¼ yd total
	Main, BindingCoral dots	1½ yd
	Backing2 panels 96" long, seams down; or 2¼ yd of 108" wide	5½ yd
	Batting81" × 96"	Full

Cutting

Main, Border: Cut 4 strips 8½" × WOF. Subcut 16 squares 8½". Cut 8 strips 4½" × WOF. Join end to end. Cut 2 at 80½" and 2 at 72½".
Background: Cut 36 strips 4½" × WOF. Subcut 320 squares 4½" for the stitch-and-flip corners.
Main, from each of the 4 fabrics: Lime stripe: Cut 4 strips 8½" × WOF. Subcut 16 squares 8½". Aqua swirl: Cut 3 strips 8½" × WOF. Subcut 12 squares 8½". Big bloom: Cut 3 strips 8½" × WOF. Subcut 12 squares 8½". Mustard crosshatch: Cut 3 strips 8½" × WOF. Subcut 12 squares 8½".
Main, Binding: Cut 3 strips 8½" × WOF. Subcut 12 squares 8½". Cut 8 strips 2½" × WOF. Join into one 332" strip.

Putting it together

Make 80 Square in a Square blocks, 8" finished (8½" with seam allowance). That takes 80 stitch-and-flip units.
Lay out the blocks in 10 rows of 8. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
Layer the backing (80" × 96"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

Full Square in a Square quilt, 88" × 96"

110 blocks of 8", 11 rows of 10, 4" border.

Square in a Square quilt, full size, 88" × 96"

Fabric for the full size
	Main, BorderTeal geometric	2¾ yd
	BackgroundCream solid	6¾ yd
	Main4 fabrics, scrappy	5¾ yd total
	Main, BindingCoral dots	2 yd
	Backing3 panels 96" long, seams across; or 2¾ yd of 108" wide	8 yd
	Batting120" × 120"	King

Cutting

Main, Border: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Cut 9 strips 4½" × WOF. Join end to end. Cut 2 at 88½" and 2 at 88½".
Background: Cut 49 strips 4½" × WOF. Subcut 440 squares 4½" for the stitch-and-flip corners.
Main, from each of the 4 fabrics: Lime stripe: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Aqua swirl: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Big bloom: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Mustard crosshatch: Cut 4 strips 8½" × WOF. Subcut 15 squares 8½".
Main, Binding: Cut 4 strips 8½" × WOF. Subcut 15 squares 8½". Cut 10 strips 2½" × WOF. Join into one 380" strip.

Putting it together

Make 110 Square in a Square blocks, 8" finished (8½" with seam allowance). That takes 110 stitch-and-flip units.
Lay out the blocks in 11 rows of 10. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
Layer the backing (96" × 104"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

Queen Square in a Square quilt, 88" × 112"

130 blocks of 8", 13 rows of 10, 4" border.

Fabric for the queen size
	Main, BorderTeal geometric	3¼ yd
	BackgroundCream solid	8 yd
	Main4 fabrics, scrappy	6½ yd total
	Main, BindingCoral dots	2¼ yd
	Backing3 panels 96" long, seams across; or 3½ yd of 108" wide	8 yd
	Batting120" × 120"	King

Cutting

Main, Border: Cut 7 strips 8½" × WOF. Subcut 25 squares 8½". Cut 10 strips 4½" × WOF. Join end to end. Cut 2 at 104½" and 2 at 88½".
Background: Cut 58 strips 4½" × WOF. Subcut 520 squares 4½" for the stitch-and-flip corners.
Main, from each of the 4 fabrics: Lime stripe: Cut 7 strips 8½" × WOF. Subcut 25 squares 8½". Aqua swirl: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Big bloom: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Mustard crosshatch: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½".
Main, Binding: Cut 5 strips 8½" × WOF. Subcut 20 squares 8½". Cut 10 strips 2½" × WOF. Join into one 412" strip.

Putting it together

Make 130 Square in a Square blocks, 8" finished (8½" with seam allowance). That takes 130 stitch-and-flip units.
Lay out the blocks in 13 rows of 10. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
Layer the backing (96" × 120"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

King Square in a Square quilt, 112" × 112"

169 blocks of 8", 13 rows of 13, 4" border.

Square in a Square quilt, king size, 112" × 112"

Fabric for the king size
	Main, BorderTeal geometric	4 yd
	BackgroundCream solid	10½ yd
	Main4 fabrics, scrappy	8 yd total
	Main, BindingCoral dots	2½ yd
	Backing3 panels 120" long, seams across; or 6¾ yd of 108" wide	10 yd
	Batting120" × 120"	King

Cutting

Main, Border: Cut 9 strips 8½" × WOF. Subcut 35 squares 8½". Cut 11 strips 4½" × WOF. Join end to end. Cut 2 at 104½" and 2 at 112½".
Background: Cut 76 strips 4½" × WOF. Subcut 676 squares 4½" for the stitch-and-flip corners.
Main, from each of the 4 fabrics: Lime stripe: Cut 8 strips 8½" × WOF. Subcut 30 squares 8½". Aqua swirl: Cut 7 strips 8½" × WOF. Subcut 28 squares 8½". Big bloom: Cut 6 strips 8½" × WOF. Subcut 24 squares 8½". Mustard crosshatch: Cut 7 strips 8½" × WOF. Subcut 28 squares 8½".
Main, Binding: Cut 6 strips 8½" × WOF. Subcut 24 squares 8½". Cut 11 strips 2½" × WOF. Join into one 460" strip.

Putting it together

Make 169 Square in a Square blocks, 8" finished (8½" with seam allowance). That takes 169 stitch-and-flip units.
Lay out the blocks in 13 rows of 13. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
Add the 4" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
Layer the backing (120" × 120"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

See this quilt in your own fabric

With the cut list for your size, checked against your stash.

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