Precut pack purchase plan

Turn repeated rectangular cuts into required precuts and whole packs to buy.

Measurements

Editable example inputs. Adjust them for your project.

Precut format example

Illustrative custom values: 5 × 5 in usable precuts with 42 eligible pieces per pack. Examples fill nominal format sizes; replace them with measured usable dimensions and actual eligible contents.

Precut usable width in Precut usable length in

Cut width in Cut length in

Enter cut dimensions including seam allowances. Measure usable precuts after excluding selvage, pinked-edge losses or other unusable areas; no deductions or seam allowances are added here.

Required cut count pieces Eligible precuts per pack pieces

Count only pieces suitable for the current fabric role. Enter 1 when buying single pieces. A bundle’s total piece count is insufficient if some fabrics cannot be used.

Cut orientation

Keep the entered orientation for directional prints. The model compares uniform grids for one repeated cut size. Mixed orientations, multiple cut sizes, color allocation and scrap reuse are not optimized.

Input guidance and units

Enter inches unless a field says otherwise. The result keeps the theoretical quantity separate from purchase rounding.

Enter fractional inches as decimals: 1/8 = 0.125, 1/4 = 0.25, 1/2 = 0.5. Dimensions and yard increments use steps of 0.125; counts use whole numbers. Fraction text such as 1/8 is not accepted in number fields.

What this calculator answers

This tool estimates repeated rectangular cuts from measured precuts, then rounds the number of eligible pieces up to whole packs.

How to use it

Enter or select a format example, then replace it with measured usable dimensions when needed.
Enter cut dimensions including seam allowances and the number of cuts required.
Enter eligible precuts per pack and whether uniform 90-degree rotation is allowed.
Review cuts per piece, required pieces, whole packs and spare capacity.

Formula and variables

Cuts per precut = floor(precut width ÷ cut width) × floor(precut length ÷ cut length), optionally compared with one uniformly rotated grid. Required precuts = ceiling(required cuts ÷ cuts per precut). Whole packs = ceiling(required precuts ÷ eligible pieces per pack).

Usable precutin: Measured rectangle after unusable edge area is excluded.
Eligible pieces per packpieces: Only pieces usable for this fabric role.
Extra cut capacitycuts: Purchased grid capacity beyond requested cuts.

Independent example

200 repeated 2.5 × 2.5 in cuts from 5 × 5 in usable precuts, 42 eligible pieces per pack.

Each precut fits 2 × 2 = 4 cuts. 200 ÷ 4 = 50 precuts. ceiling(50 ÷ 42) = 2 packs, or 84 eligible precuts. Capacity is 84 × 4 = 336 cuts, 136 above the requested count.

4 cuts per precut
50 required precuts
2 whole packs
136 extra cut capacity

What the result means

Pack counts depend on entered eligible contents. The rectangular grid does not optimize multiple cut sizes, color allocation or scrap reuse.

Common questions

Does this include cutting waste?

Only the allowances named in the inputs are included. The calculation does not infer scrap reuse or an extra waste percentage.

Are the result and purchase amount the same?

Theoretical material required and a recommended purchase quantity are different. A purchase amount is shown only when the method supports it and its rounding choice is supplied.

Method notes and unresolved issues

Use measured usable dimensions and the construction method named on this page. Example inputs are optional and are not universal standards.