Block Size Calculator
Finished ↔ Unfinished Size
Finished Block Size (inches):
Seam Allowance (default ¼"):
Half-Square Triangles (HST)
Desired Finished HST Size (inches):
Quarter-Square Triangles (QST)
Desired Finished QST Size (inches):
Flying Geese
Finished Width (inches):
Finished Height (inches):
Quick Reference
| Finished | Unfinished | HST Cut | QST Cut |
|---|---|---|---|
| 4" | 4.5" | 4⅞" | 5¼" |
| 6" | 6.5" | 6⅞" | 7¼" |
| 8" | 8.5" | 8⅞" | 9¼" |
| 9" | 9.5" | 9⅞" | 10¼" |
| 10" | 10.5" | 10⅞" | 11¼" |
| 12" | 12.5" | 12⅞" | 13¼" |
| 14" | 14.5" | 14⅞" | 15¼" |
| 16" | 16.5" | 16⅞" | 17¼" |