A connected quilt project
Start with the border planner when your top is still growing. Its result links open the backing layout and binding strip planner with the resulting raw top dimensions already filled in. Each tool also works on its own. Shared-project links keep dimensions, units and allowances instead of returning you to an unrelated example size.
Worked example: one project through three plans
A 60 × 80-inch raw top with a 3-inch finished border on each side becomes 66 × 86 inches raw. Adding 4-inch backing overhang makes the target 74 × 94. At 42-inch usable fabric width with ½-inch backing seams, two vertical panels require 188 inches along the bolt, rounded to 5¼ yards at eighth-yard increments. Binding the 66 × 86 raw edge requires a 304-inch perimeter. With 12 inches reserve and 2½-inch diagonal-joined WOF strips, eight strips provide 318½ inches; buy ⅝ yard. These are planning assumptions, not universal sewing requirements.
What each measurement means
Current unfinished top is the actual outer-edge rectangle. Projected finished dimensions are seam-line dimensions and omit edge seam allowances. Cut dimensions include the seams needed for joining. Usable fabric width excludes selvages; overhang extends beyond the top; purchase rounding adds length along the bolt. The tools show those quantities separately.
Batch pieces for the top
The half-square triangle calculator is a separate batch-cut utility. It supports trim-safe two-at-a-time and Magic 8 methods with fixed quarter-inch seams and shows the quantity for each fabric. It does not infer a quilt layout or how many HSTs your design needs.
Private calculations and explicit project links
Calculations, diagrams, copy and print preparation run in your browser. Input edits do not upload a project, save it in local storage or rewrite the address. Following a project link puts numeric dimensions and settings in its query string; those values are visible to anyone with the link and to the server receiving that page request. There is no hidden persistent project save. The site's existing explicit theme preference remains separate.
Before you cut
Remeasure your fabric and top, confirm your quilting service's requirements and sew a test pair when using HST methods. Diagrams are dimensioned planning schematics, not full-size sewing patterns. Shrinkage, quilting take-up, defects, repeat matching and physical seam accuracy are excluded. Each tool explains its own model and links to instructional sources; none guarantees garment fit or a physical sewing result.