Traditional / Public Domain — widely popular during the Great Depression for fabric economy
A square-in-a-square design where a center square is framed by four triangles, creating a diamond-on-point effect within the block. Named for its efficient use of fabric, the Economy Block was a Depression-era favorite that maximized visual impact from minimal materials.
The Economy Block, also known as Square-in-a-Square, is one of the fundamental building blocks of quilting. Its origins trace to the early 1800s, but it became especially popular during the Great Depression of the 1930s when fabric was scarce and quilters valued patterns that created attractive designs with minimal waste. The name directly reflects this ethos of thrift.
During the Depression, the Economy Block appeared frequently in newspaper quilt columns distributed by syndicates like the Kansas City Star. It was recommended for its efficient cutting layout and the way it stretched small amounts of fabric into eye-catching blocks. The pattern is also a building block for many more complex designs including Weathervane, Churn Dash variations, and numerous star patterns.
Also known as: Square-in-a-Square, Diamond-in-a-Square, Economy Patch, Thrift Block
finished Block Size
12"
seam Allowance
1/4"
grid Basis
Center square on point + 4 corner triangles
units Required
1 center square + 4 triangles (from 2 squares cut diagonally)
All measurements include 1/4" seam allowance unless noted.
| Piece | Fabric | Cut Size | Qty | Notes |
|---|---|---|---|---|
| Center Square | Feature | 9 1/4" x 9 1/4" | 1 | This square sits on point in the center of the block |
| Corner Triangle Square | Background | 7 1/8" x 7 1/8" | 2 | Cut each once diagonally to yield 4 half-square triangles |
Cut one 9 1/4" square from your feature fabric. Cut two 7 1/8" squares from your background fabric, then cut each once on the diagonal to yield 4 half-square triangles.
Tip: The center square is cut generously to allow for trimming. The triangles are cut with the straight grain on the long edge (hypotenuse) to stabilize the block edges.
Fold each triangle and the center square in half to find the midpoints. Align midpoints and pin. Sew a triangle to two opposite sides of the center square with 1/4" seams. The triangle points will extend beyond the square edges — this is correct. Press seams toward the triangles.
Sew triangles to the remaining two sides in the same manner. Press seams toward the triangles. The block should now appear as a square.
Tip: The triangle tips (dog ears) will stick out past the block edges. Do not trim them until you square up the block.
Using your 12 1/2" square ruler, center the design and trim the block to 12 1/2" square. Make sure to leave 1/4" seam allowance beyond the points of the center square on all four sides.
Give the block a final press. The center square should be perfectly on-point with equal-sized triangles in all four corners. The block should measure 12 1/2" square.
Tip: If the center square appears off-center, re-trim. The seam allowance at each point of the diamond should be exactly 1/4".
See how this traditional pattern looks in different color combinations.
Straight set with sashing to frame each diamond
Side by side — secondary patterns appear where triangles meet
Alternating with nine-patch blocks for a sampler effect