Curtain Panel Yardage
Sewing / Practical workbench

Worked examples

Three reproducible scenarios, with the complete inputs and calculated outputs.

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Worked scenario

Base example

Track width is 180 cm. All other inputs remain at the base values.

InputValueUnit
Track width180cm
Fullness ratio2times
Finished drop220cm
Total top and bottom allowance30cm
Usable fabric width138cm
Vertical pattern repeat, 0 for none0cm

Calculated results

ResultValueUnit
Fabric widths required3widths
Cut length per width250cm
Total fabric length7.5m

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Worked scenario

Smaller first input

Track width is 144 cm. All other inputs remain at the base values.

InputValueUnit
Track width144cm
Fullness ratio2times
Finished drop220cm
Total top and bottom allowance30cm
Usable fabric width138cm
Vertical pattern repeat, 0 for none0cm

Calculated results

ResultValueUnit
Fabric widths required3widths
Cut length per width250cm
Total fabric length7.5m

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Worked scenario

Larger first input

Track width is 216 cm. All other inputs remain at the base values.

InputValueUnit
Track width216cm
Fullness ratio2times
Finished drop220cm
Total top and bottom allowance30cm
Usable fabric width138cm
Vertical pattern repeat, 0 for none0cm

Calculated results

ResultValueUnit
Fabric widths required4widths
Cut length per width250cm
Total fabric length10m

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Make a heading sample before committing the fullness ratio, then confirm usable width after hems.