Quilting calculator
Pieces from Fabric Calculator
Check how many repeated rectangles fit in one real fabric piece, or whether a requested quantity fits.
Free · No account · Editable assumptions
Your result
Recommended answer Calculated resultA value derived from the same validated inputs, assumptions, and calculation contract shown on this page.Learn more
Copies a concise text summary of the current result when browser clipboard access is available.Opens the browser print flow using the dedicated readable plan layout.Transfers the compatible calculated cut requirement into the locally saved project for joint planning.
How this calculator works
Assumptions
Fabric width is the crosswise axis and length is the lengthwise axis. Enter the physical rectangle you actually own. Finished piece sizes gain seam allowance before placement; cut sizes do not.
Methodology
This uses the same bounded deterministic finite-stock geometry engine as the project planner. The visual layout shows actual selected placements and practical rectangular leftovers; it does not promise a globally optimal packing.
Worked example
An 18 × 21 inch fat-quarter-shaped rectangle can practically hold twelve 5-inch squares in the locked test fixture. The diagram identifies every placed square and the remaining rectangular regions.
Limitations
This focused calculator covers the construction method and rectangular measurements described above. It does not infer a complete quilt pattern or replace method-specific instructions.
Common question
Can I change the defaults? Yes. The visible defaults are planning conveniences; use the measurements and assumptions that match your fabric, method, and quilting setup.
Keep planning
Plan more than one piece
Combine all the rectangles for each fabric into a shopping list, cutting list, and visual layout.
Open the fabric cutting plannerTransfers the compatible calculated cut requirement into the locally saved project for joint planning.