Quiltspiration

Half-square triangle quilt pattern

6" half-square triangles in scrappy blues on cream, turned in groups of four so the darks make diamonds across the quilt.

The queen size is 90" × 108" with 238 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.

Half-Square Triangle quilt sizes
SizeFinishedBlocksTop fabric
Crib48" × 60"634½ yd
Throw60" × 72"995¾ yd
Twin72" × 90"1547¾ yd
Full84" × 96"19510½ yd
Queen90" × 108"23811 yd
King108" × 108"28913½ yd
Half-Square Triangle quilt, queen size, 90" × 108"
Queen, 90" × 108"

Crib Half-Square Triangle quilt, 48" × 60"

63 blocks of 6", 9 rows of 7, 3" border.

Half-Square Triangle quilt, crib size, 48" × 60"
Fabric for the crib size
Main, BorderNavy sprig tree1 yd
BackgroundCream calico1½ yd
Main3 fabrics, scrappy1¼ yd total
Main, BindingNavy floral¾ yd
Backing2 panels 56" long, seams across; or 1¾ yd of 108" wide3¼ yd
Batting72" × 90"Twin

Cutting

  • Main, Border: Cut 2 strips 6⅞" × WOF. Subcut 7 squares 6⅞" for the half-square triangles. Cut 5 strips 3½" × WOF. Join end to end. Cut 2 at 54½" and 2 at 48½".
  • Background: Cut 6 strips 6⅞" × WOF. Subcut 32 squares 6⅞" for the half-square triangles.
  • Main, from each of the 3 fabrics: Navy gold floral: Cut 1 strips 6⅞" × WOF. Subcut 6 squares 6⅞" for the half-square triangles. Ocean batik: Cut 2 strips 6⅞" × WOF. Subcut 7 squares 6⅞" for the half-square triangles. Navy batik: Cut 2 strips 6⅞" × WOF. Subcut 7 squares 6⅞" for the half-square triangles.
  • Main, Binding: Cut 1 strips 6⅞" × WOF. Subcut 6 squares 6⅞" for the half-square triangles. Cut 6 strips 2½" × WOF. Join into one 228" strip.

Putting it together

  1. Make 63 Half-square triangle blocks, 6" finished (6½" with seam allowance). That takes 63 half-square triangles.
  2. Lay out the blocks in 9 rows of 7, turned as shown. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
  3. Add the 3" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
  4. Layer the backing (56" × 68"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

Throw Half-Square Triangle quilt, 60" × 72"

99 blocks of 6", 11 rows of 9, 3" border.

Half-Square Triangle quilt, throw size, 60" × 72"
Fabric for the throw size
Main, BorderNavy sprig tree1¼ yd
BackgroundCream calico2 yd
Main3 fabrics, scrappy½ yd each
Main, BindingNavy floral1 yd
Backing2 panels 68" long, seams across; or 2 yd of 108" wide4 yd
Batting72" × 90"Twin

Cutting

  • Main, Border: Cut 2 strips 6⅞" × WOF. Subcut 10 squares 6⅞" for the half-square triangles. Cut 7 strips 3½" × WOF. Join end to end. Cut 2 at 66½" and 2 at 60½".
  • Background: Cut 9 strips 6⅞" × WOF. Subcut 50 squares 6⅞" for the half-square triangles.
  • Main, from each of the 3 fabrics: Cut 2 strips 6⅞" × WOF. Subcut 10 squares 6⅞" for the half-square triangles.
  • Main, Binding: Cut 2 strips 6⅞" × WOF. Subcut 10 squares 6⅞" for the half-square triangles. Cut 7 strips 2½" × WOF. Join into one 276" strip.

Putting it together

  1. Make 99 Half-square triangle blocks, 6" finished (6½" with seam allowance). That takes 99 half-square triangles.
  2. Lay out the blocks in 11 rows of 9, turned as shown. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
  3. Add the 3" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
  4. Layer the backing (68" × 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 Half-Square Triangle quilt, 72" × 90"

154 blocks of 6", 14 rows of 11, 3" border.

Half-Square Triangle quilt, twin size, 72" × 90"
Fabric for the twin size
Main, BorderNavy sprig tree1½ yd
BackgroundCream calico2¾ yd
Main3 fabrics, scrappy¾ yd each
Main, BindingNavy floral1¼ yd
Backing2 panels 98" long, seams down; or 2¼ yd of 108" wide5½ yd
Batting90" × 108"Queen

Cutting

  • Main, Border: Cut 3 strips 6⅞" × WOF. Subcut 16 squares 6⅞" for the half-square triangles. Cut 8 strips 3½" × WOF. Join end to end. Cut 2 at 84½" and 2 at 72½".
  • Background: Cut 13 strips 6⅞" × WOF. Subcut 77 squares 6⅞" for the half-square triangles.
  • Main, from each of the 3 fabrics: Navy gold floral: Cut 3 strips 6⅞" × WOF. Subcut 15 squares 6⅞" for the half-square triangles. Ocean batik: Cut 3 strips 6⅞" × WOF. Subcut 16 squares 6⅞" for the half-square triangles. Navy batik: Cut 3 strips 6⅞" × WOF. Subcut 16 squares 6⅞" for the half-square triangles.
  • Main, Binding: Cut 3 strips 6⅞" × WOF. Subcut 16 squares 6⅞" for the half-square triangles. Cut 8 strips 2½" × WOF. Join into one 336" strip.

Putting it together

  1. Make 154 Half-square triangle blocks, 6" finished (6½" with seam allowance). That takes 154 half-square triangles.
  2. Lay out the blocks in 14 rows of 11, turned as shown. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
  3. Add the 3" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
  4. Layer the backing (80" × 98"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

Full Half-Square Triangle quilt, 84" × 96"

195 blocks of 6", 15 rows of 13, 3" border.

Half-Square Triangle quilt, full size, 84" × 96"
Fabric for the full size
Main, BorderNavy sprig tree2 yd
BackgroundCream calico3¾ yd
Main3 fabrics, scrappy1 yd each
Main, BindingNavy floral1¾ yd
Backing3 panels 92" long, seams across; or 2¾ yd of 108" wide7¾ yd
Batting120" × 120"King

Cutting

  • Main, Border: Cut 4 strips 6⅞" × WOF. Subcut 20 squares 6⅞" for the half-square triangles. Cut 9 strips 3½" × WOF. Join end to end. Cut 2 at 90½" and 2 at 84½".
  • Background: Cut 17 strips 6⅞" × WOF. Subcut 98 squares 6⅞" for the half-square triangles.
  • Main, from each of the 3 fabrics: Cut 4 strips 6⅞" × WOF. Subcut 20 squares 6⅞" for the half-square triangles.
  • Main, Binding: Cut 4 strips 6⅞" × WOF. Subcut 20 squares 6⅞" for the half-square triangles. Cut 9 strips 2½" × WOF. Join into one 372" strip.

Putting it together

  1. Make 195 Half-square triangle blocks, 6" finished (6½" with seam allowance). That takes 195 half-square triangles.
  2. Lay out the blocks in 15 rows of 13, turned as shown. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
  3. Add the 3" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
  4. Layer the backing (92" × 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 Half-Square Triangle quilt, 90" × 108"

238 blocks of 6", 17 rows of 14, 3" border.

Half-Square Triangle quilt, queen size, 90" × 108"
Fabric for the queen size
Main, BorderNavy sprig tree2 yd
BackgroundCream calico4¼ yd
Main3 fabrics, scrappy1 yd each
Main, BindingNavy floral1¾ yd
Backing3 panels 98" long, seams across; or 3¼ yd of 108" wide8¼ yd
Batting120" × 120"King

Cutting

  • Main, Border: Cut 4 strips 6⅞" × WOF. Subcut 24 squares 6⅞" for the half-square triangles. Cut 10 strips 3½" × WOF. Join end to end. Cut 2 at 102½" and 2 at 90½".
  • Background: Cut 20 strips 6⅞" × WOF. Subcut 119 squares 6⅞" for the half-square triangles.
  • Main, from each of the 3 fabrics: Cut 4 strips 6⅞" × WOF. Subcut 24 squares 6⅞" for the half-square triangles.
  • Main, Binding: Cut 4 strips 6⅞" × WOF. Subcut 24 squares 6⅞" for the half-square triangles. Cut 10 strips 2½" × WOF. Join into one 408" strip.

Putting it together

  1. Make 238 Half-square triangle blocks, 6" finished (6½" with seam allowance). That takes 238 half-square triangles.
  2. Lay out the blocks in 17 rows of 14, turned as shown. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
  3. Add the 3" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
  4. Layer the backing (98" × 116"), batting and top, quilt, and trim. Join the binding strips end to end, press them in half lengthwise and sew to the front.

King Half-Square Triangle quilt, 108" × 108"

289 blocks of 6", 17 rows of 17, 3" border.

Half-Square Triangle quilt, king size, 108" × 108"
Fabric for the king size
Main, BorderNavy sprig tree2¼ yd
BackgroundCream calico5½ yd
Main3 fabrics, scrappy1¼ yd each
Main, BindingNavy floral2 yd
Backing3 panels 116" long, seams across; or 6½ yd of 108" wide9¾ yd
Batting120" × 120"King

Cutting

  • Main, Border: Cut 5 strips 6⅞" × WOF. Subcut 30 squares 6⅞" for the half-square triangles. Cut 11 strips 3½" × WOF. Join end to end. Cut 2 at 102½" and 2 at 108½".
  • Background: Cut 25 strips 6⅞" × WOF. Subcut 145 squares 6⅞" for the half-square triangles.
  • Main, from each of the 3 fabrics: Cut 5 strips 6⅞" × WOF. Subcut 29 squares 6⅞" for the half-square triangles.
  • Main, Binding: Cut 5 strips 6⅞" × WOF. Subcut 29 squares 6⅞" for the half-square triangles. Cut 11 strips 2½" × WOF. Join into one 444" strip.

Putting it together

  1. Make 289 Half-square triangle blocks, 6" finished (6½" with seam allowance). That takes 289 half-square triangles.
  2. Lay out the blocks in 17 rows of 17, turned as shown. Sew the rows, pressing the seams in opposite directions from row to row, then join the rows.
  3. Add the 3" border: measure through the middle of the quilt, sew strips to the sides first, then to the top and bottom.
  4. Layer the backing (116" × 116"), 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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