Quilting calculator
Quilt Batting Calculator
Find the batting size with overage and check how much to cut from an optional roll or precut width.
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
Overage is added to all four sides. The editable 4-inch default is a longarm-oriented planning convenience, not a universal rule. This tool does not calculate pieced batting.
Methodology
The calculator adds twice the side overage to each quilt dimension. When a roll width is supplied, it checks both allowed orientations and reports the one requiring less linear length.
Worked example
A 60 × 80 inch quilt with 4 inches per side needs batting 68 × 88 inches. On a 72-inch roll, place the 68-inch dimension across the roll and cut 88 inches of linear length.
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.