Half-square triangle cut size calculator
Enter the finished size of your half-square triangle and see the square to cut (finished size + 7/8″ for the two-at-a-time method), how many squares each fabric needs for a whole quilt, and the yardage.
HST cut size chart (two at a time)
| Finished HST | Cut square |
|---|---|
| 1″ | 1 7/8″ |
| 1 1/2″ | 2 3/8″ |
| 2″ | 2 7/8″ |
| 2 1/2″ | 3 3/8″ |
| 3″ | 3 7/8″ |
| 4″ | 4 7/8″ |
| 5″ | 5 7/8″ |
| 6″ | 6 7/8″ |
Cut a light and a dark square, draw a diagonal, sew 1/4″ each side, cut on the line: two units. Many quilters cut a hair larger and trim down.