SeeMyQuiltFour-Fabric Quarter-Square Triangle quilt block
Four quarter triangles meeting in the center, each cut from a different fabric.
Cutting chart by block size
4" Four-Fabric Quarter-Square Triangle (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 square | 5 1/4" × 5 1/4" | 1 triangles (cut twice on the diagonal) |
| Background | 1 square | 5 1/4" × 5 1/4" | 1 triangles (cut twice on the diagonal) |
| Accent | 1 square | 5 1/4" × 5 1/4" | 1 triangles (cut twice on the diagonal) |
| Fabric 4 | 1 square | 5 1/4" × 5 1/4" | 1 triangles (cut twice on the diagonal) |
6" Four-Fabric Quarter-Square Triangle (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 square | 7 1/4" × 7 1/4" | 1 triangles (cut twice on the diagonal) |
| Background | 1 square | 7 1/4" × 7 1/4" | 1 triangles (cut twice on the diagonal) |
| Accent | 1 square | 7 1/4" × 7 1/4" | 1 triangles (cut twice on the diagonal) |
| Fabric 4 | 1 square | 7 1/4" × 7 1/4" | 1 triangles (cut twice on the diagonal) |
8" Four-Fabric Quarter-Square Triangle (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 square | 9 1/4" × 9 1/4" | 1 triangles (cut twice on the diagonal) |
| Background | 1 square | 9 1/4" × 9 1/4" | 1 triangles (cut twice on the diagonal) |
| Accent | 1 square | 9 1/4" × 9 1/4" | 1 triangles (cut twice on the diagonal) |
| Fabric 4 | 1 square | 9 1/4" × 9 1/4" | 1 triangles (cut twice on the diagonal) |
12" Four-Fabric Quarter-Square Triangle (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 square | 13 1/4" × 13 1/4" | 1 triangles (cut twice on the diagonal) |
| Background | 1 square | 13 1/4" × 13 1/4" | 1 triangles (cut twice on the diagonal) |
| Accent | 1 square | 13 1/4" × 13 1/4" | 1 triangles (cut twice on the diagonal) |
| Fabric 4 | 1 square | 13 1/4" × 13 1/4" | 1 triangles (cut twice on the diagonal) |
How to make a 12" Four-Fabric Quarter-Square Triangle block
- Cut the pieces in the chart above. All measurements include a 1/4" seam allowance.
- 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.
- Lay the pieces out as in the diagram and sew them together, matching the center.
- The block should measure 12 1/2" now and 12" once it is sewn into the quilt.
Yardage for a Four-Fabric Quarter-Square Triangle quilt (12" blocks)
| Quilt size | Blocks | Finished size | Main | Background | Accent | Fabric 4 | Border & binding | Backing |
|---|---|---|---|---|---|---|---|---|
| Baby | 3 × 4 (12) | 42" × 54" | 1/2 yd | 1/2 yd | 1/2 yd | 1/2 yd | 1 yd | 3 1/2 yd |
| Lap | 4 × 5 (20) | 54" × 66" | 7/8 yd | 7/8 yd | 7/8 yd | 7/8 yd | 1 1/8 yd | 4 1/4 yd |
| Throw | 5 × 6 (30) | 66" × 78" | 1 1/4 yd | 1 1/4 yd | 1 1/4 yd | 1 1/4 yd | 1 3/8 yd | 5 yd |
| Twin | 6 × 8 (48) | 78" × 102" | 1 5/8 yd | 1 5/8 yd | 1 5/8 yd | 1 5/8 yd | 1 3/4 yd | 9 1/4 yd |
| Queen | 8 × 8 (64) | 102" × 102" | 2 1/2 yd | 2 1/2 yd | 2 1/2 yd | 2 1/2 yd | 1 7/8 yd | 9 1/4 yd |
| King | 9 × 9 (81) | 114" × 114" | 2 7/8 yd | 2 7/8 yd | 2 7/8 yd | 2 7/8 yd | 2 1/8 yd | 10 1/4 yd |
Blocks side by side with a 3" border, 2 1/2" binding, 42" usable width and 10% extra.
Four ways to set it
A throw quilt of 12" Four-Fabric Quarter-Square Triangle blocks in each setting.
| Setting | Blocks | Finished size | Extra fabric |
|---|---|---|---|
| Side by side | 30 | 66" × 78" | – |
| With sashing | 20 | 60" × 74" | Sashing 7/8 yd, Cornerstones 1/8 yd |
| Alternating plain blocks | 15 pieced + 15 plain | 66" × 78" | Plain blocks 2 yd |
| On point | 18 | 57" × 74" | Setting triangles 1 1/2 yd |
See Four-Fabric Quarter-Square Triangle 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
| Fabric | Yardage | Cut |
|---|
Based on 42" usable fabric width, 1/4" seams and 10% extra. Your photos stay on your device.
Questions
How many fabrics does a Four-Fabric Quarter-Square Triangle block need?
Four: main, background, accent and fabric 4. Choose a main fabric that contrasts clearly with the background so the design reads from a distance.
What size pieces do I cut for a 12 inch Four-Fabric Quarter-Square Triangle?
1 main square at 13 1/4" × 13 1/4"; 1 background square at 13 1/4" × 13 1/4"; 1 accent square at 13 1/4" × 13 1/4"; 1 fabric 4 square at 13 1/4" × 13 1/4".
How many Four-Fabric Quarter-Square Triangle blocks for a lap quilt?
20 blocks at 12", set 4 by 5 with a 3" border, make a 54" × 66" quilt.
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