SPECIFIED DETAIL DIMENSIONS

Curtain fabric cut order — finished drop scenarios.

How does changing finished drop affect curtain fabric cut order when the other inputs stay fixed?

What this decision changes

The stated allowance, insertion, return or cut loss belongs to a particular physical detail. It must be applied on the same dimensional basis as the finished piece. Method basis: Rounds the number of fabric widths per window before multiplying by cut length. Fullness, hems and product pattern repeat are supplied rather than recommended.

The focus is specified finished drop. All other shared inputs remain fixed for each evaluated range.

Length = windows×ceil(rod width×fullness/usable width)×repeat-aligned dropCurtain Fabric Cut Order Calculator

Evaluate your supplied alternatives

Start with your measured plan and selected product data. The initial values and range are illustrative. Each scenario changes only specified finished drop; the other entered values stay fixed.

Display units

Measured plan and product inputs

Measured rod coverage width

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Specified fullness factor

Usable fabric width

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Specified finished drop

Total top and bottom allowances

Specified vertical pattern repeat

Identical windows

Supplied comparison range for specified finished drop

Lower supplied comparison value

Upper supplied comparison value

Nine evenly spaced values are evaluated. Whole counts are rounded to distinct integer scenarios. Values between the listed samples are not calculated.

9 evaluated scenarios

Baseline: Fabric purchase length — 14.4 m. Rejected combinations remain visible below.

Quantity to plot

Each bar is one actual calculated fabric purchase length. Horizontal values: specified finished drop in m.

Specified finished drop	Fabric purchase length	Change from baseline	Use this scenario
1.2 m	9 m	-5.4 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 1.5 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
1.45 m	10.8 m	-3.6 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 1.8 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
1.7 m	12.6 m	-1.8 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 2.1 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
1.95 m	14.4 m	0 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 2.4 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
2.2 m	14.4 m	0 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 2.4 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
2.45 m	16.2 m	1.8 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 2.7 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
2.7 m	18 m	3.6 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 3 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
2.95 m	19.8 m	5.4 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 3.3 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.
3.2 m	21.6 m	7.2 m	Open in calculator Exact quantity breakdown Full fabric widths per window 3 Pattern-aligned cut length 3.6 m Planned sewn width before seam deductions 4.5 m Usable width must already account for seams and side hems. Pair division, pattern placement and matching between windows are not optimised.

Read the evaluated results

Compare finished demand with stock consumption. Some detail changes reduce useful cover or alter full-blank fit rather than simply adding proportional material.

Replace every illustrative baseline measurement and selected product value with the inputs for your actual task.
Enter a comparison range on the focused input's stated unit and quantity basis.
Review rejected combinations and use the exact detail lines to distinguish measured demand from whole purchases.
Open an evaluated scenario in the full calculator to save its original inputs and quantity breakdown to a browser material project.

Keep the comparison within scope

These are comparisons of already supplied details; the analysis does not choose joint, seam, fitting or installation requirements.

Rounds the number of fabric widths per window before multiplying by cut length. Fullness, hems and product pattern repeat are supplied rather than recommended.

Dimensions, quantities, prices, timing and product properties are supplied by you. This tool does not select construction specifications or assess structural, electrical or hydraulic suitability.

Only the listed samples are evaluated. Intermediate values, alternate constraints and global cutting optimality are not inferred from the graph.

Continue with this quantity method

Curtain Fabric Cut Order Calculator

Other independent input decisions

Prepare the actual material data

Read the measurement and purchase guides

Quantity method and illustrative scenarios checked 6 October 2026. Methods and scope.