SeeMyQuilt
Pinwheels & triangles · Confident beginner · 12" finished

12 inch Hourglass Four Patch quilt block

Cutting chart, piecing steps and yardage for a Hourglass Four Patch block that finishes at 12". The block is a 2 × 2 grid and each cell finishes at 6".

Finished block 12" × 12". Unfinished 12 1/2" × 12 1/2".

Cutting chart for one block

FabricCutSizeThen
Main1 square7 1/4" × 7 1/4"4 triangles (cut twice on the diagonal)
Background1 square7 1/4" × 7 1/4"4 triangles (cut twice on the diagonal)
Accent2 squares6 1/2" × 6 1/2"–

How to piece it

  1. Cut the pieces in the chart above. All measurements include a 1/4" seam allowance.
  2. Cut the squares marked "cut twice" on both diagonals. Each gives four triangles with the long edge on the straight grain: these are the large triangles in flying geese and hourglass units.
  3. Lay all the pieces out as in the diagram. The block is a 2 × 2 grid, and each cell finishes at 6". Sew neighbouring pieces into sections, then the sections into rows, pressing seams in opposite directions from row to row.
  4. Join the rows. The block should measure 12 1/2" now and 12" once it is sewn into the quilt.

Yardage for a quilt of 12" Hourglass Four Patch blocks

Quilt sizeBlocksFinished sizeMainBackgroundAccentBorder & bindingBacking
Baby3 × 4 (12)42" × 54"3/4 yd3/4 yd7/8 yd1 yd3 1/2 yd
Lap4 × 5 (20)54" × 66"1 yd1 yd1 1/2 yd1 1/8 yd4 1/4 yd
Throw5 × 6 (30)66" × 78"1 3/8 yd1 3/8 yd2 yd1 3/8 yd5 yd
Twin6 × 8 (48)78" × 102"2 1/4 yd2 1/4 yd3 1/4 yd1 3/4 yd9 1/4 yd
Queen8 × 8 (64)102" × 102"3 yd3 yd4 3/8 yd1 7/8 yd9 1/4 yd
King9 × 9 (81)114" × 114"3 7/8 yd3 7/8 yd5 3/8 yd2 1/8 yd10 1/4 yd

Blocks side by side with a 3" border, 2 1/2" binding, 42" usable width and 10% extra.

What a lap quilt looks like

4 × 5 blocks, 54" × 66" with border.

This diagram uses plain colors. To see the quilt in your own fabrics, with sashing or on point, use the tool below: tap a fabric and choose a photo.

See it in your own fabrics

1. Your fabrics (tap a fabric, then choose a sample or your own photo)
2. Block
3. Quilt size
4. Block size
5. Setting

What to buy

FabricYardageCut

Based on 42" usable fabric width, 1/4" seams and 10% extra. Your photos stay on your device.

Questions

What do I cut for a 12 inch Hourglass Four Patch block?

1 main square at 7 1/4" × 7 1/4"; 1 background square at 7 1/4" × 7 1/4"; 2 accent squares at 6 1/2" × 6 1/2".

What size is the block before it is sewn into the quilt?

12 1/2" square. It finishes at 12" once the seams on all four sides are sewn.

How much fabric for a throw quilt of 12 inch Hourglass Four Patch blocks?

30 blocks make a 66" × 78" quilt. Buy 1 3/8 yd of main, 1 3/8 yd of background, 2 yd of accent and 1 3/8 yd of border & binding, plus 5 yd for the backing.