Rectangular Fabric Yardage Calculator. Calculate an unrotated rectangular fabric grid from cut-ready pieces, exact usable width, explicit extra length, and the supplier’s cut increment.
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Calculate one unrotated identical-rectangle fabric grid from cut-ready dimensions, exact usable width, an explicit extra-length percentage and the supplier’s actual increment without claiming a complete pattern layout or purchase approval.
Know the minimum rows and continuous length without a hidden 5% reserve.
Enter cut-ready width/length, whole quantity, exact usable width, zero or justified extra length and the supplier increment.
Can reproduce pieces per row, rows, exact yards and increment rounding while retaining layout limits.
Reject the grid when orientation, grain, nap, repeat, fold or mixed pieces make it inapplicable.
Review the complete pattern layout first, isolate only a truly identical unrotated piece group and compare the Tool record with the approved plan.
Does not use rectangular arithmetic as nesting, garment-layout or cutting approval.
Separate continuous geometric length from the amount the exact supplier will sell.
Enter the current supplier increment and documented reserve, then verify stock, lot, defects and cut policy outside the Tool.
Can explain every rounded increment without assuming quarter-yard sales or guaranteed availability.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
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Floor usable width divided by cut-ready piece width to get identical pieces per row, then ceiling whole quantity divided by that count to get complete rows.
rows = ceil(quantity / floor(usable width / cut width))Multiply row length by only the percentage supported by your exact repeat, test, defect, layout, or workroom record. Zero adds nothing; the Tool has no automatic 5% or 10%.
planned inches = rows × cut length × (1 + entered extra% / 100)Convert planned inches to exact yards, then round upward only to the entered supplier cutting or sales increment.
purchase yards = ceil(exact yards / supplier increment) × supplier incrementUpdated: August 2026
Eight 20×18-inch cut-ready pieces fit two per row across 42 usable inches: four rows, 72 base inches, 2 exact yards, and no hidden reserve.
The same exact geometric length can round differently when a supplier sells one-eighth, one-quarter, half, or whole yards; enter the current policy rather than assuming quarter yards.
A garment with fronts, backs, sleeves, facings and directional pieces is not an identical-rectangle grid. Use the complete approved pattern layout instead.
Measure or verify the width available to the exact layout after required selvage, defect, fold and edge exclusions.
Use this grid only for a truly identical, unrotated piece group and retain the full pattern, grain, nap, repeat, fold and component layout separately.
This Tool models one deliberately narrow case: identical cut-ready rectangles that remain unrotated in rows across an exact usable fabric width. It shows base continuous length, only the extra percentage you enter, exact yards, and rounding to the supplier increment you enter. It does not nest mixed pieces or decide grain, nap, repeat, fold, motif, selvage, defects, seam allowances, shrinkage, stock, lot, cutting, or purchase approval.