Block calculator
Half-square triangle calculator
Cut two-at-a-time HSTs a little large, then trim them to the size your block needs.
Open calculator →Plan your next quilt
Quilt block size calculators
Find cut sizes for four-patch, nine-patch and half-square triangle blocks. Enter a finished size and get a piece count with seam allowances included.
Block calculator
Four-patch quilt block calculator
Turn a finished four-patch block size into square cut sizes and a total piece count.
Open calculator →Block calculator
Nine-patch quilt block calculator
Find the cut size and square count for a three-by-three nine-patch block.
Open calculator →