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Curtain Panel Cut Dimensions & Linear Fabric

Estimate cut width and total fabric length using captured fullness ratios, heading allowances and an entered count of identical curtain panels.

  • Formula & worked example
  • Private in your browser
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

For one panel covering a 100 cm span at 2× fullness, the captured 2 inch side allowance gives a cut width of 205.08 cm.

Cut width = covered span × fullness + 2 inches; total length = per-panel cut length × panel count

Worked example

Enter these known values and leave the other values blank.

Type of panel
Rod pocket
Curtain fullness ratio
Light folds
Span covered by one panel
100 cm
Desired length
200 cm
Rod circumference
10 cm
Number of identical panels
2
Required cut width of each identical panel
205.1 cm
Required length of fabric
226.6 cm
Total linear length at the required cut width
453.2 cm

Assumptions and limitations

  • Enter the span covered by one panel. For equal panels sharing a wider opening, divide the covered span among panels before entering it; the model does not divide width automatically.
  • Fullness choices multiply the span by 2, 2.5 or 3, then add a fixed 2 inch side allowance. This is the required cut width, not the width of a purchased fabric roll.
  • Captured heading/hem allowances are 8.5 inches for rod pocket, 10 inches for grommet/pleated, and 4.5 inches for cuffed tabs. Non-tab modes also add half the entered rod circumference. Cuffed tabs add the separate loop-length allowance.
  • Linear length assumes each panel fits across the available fabric width. Joining widths, pattern repeats, shrinkage, seam plans and cutting waste require separate allowances.

Common questions

Can I use the linear total when my fabric roll is narrower?

Not directly. If the required panel width exceeds the usable roll width, additional fabric widths and joining seams are needed. Plan that layout before purchasing.

References

Bookify requires a whole positive number of identical curtain panels.

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