Curtain Panel Calculator — Free Online Tool
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Curtain Panel Calculator

Calculate required curtain panels and total width based on rod width and fullness factor

Formula: $\text{Total Fabric Width} = \text{Rod Width} \times \text{Fullness Multiplier}$. Standard fullness is 2x for a gathered look. Enter your window measurements below.
Window & Panel Parameters Input

Calculation Results

⚠️ Always round up the number of panels to the next whole even number so that curtains open symmetrically from the center.

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