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Curtain Size Calculator
Calculate recommended curtain width and finished length based on window measurements
Sizing Formula: Curtain Width = $\text{Rod Width} \times \text{Fullness Factor}$ (typically 2x). Length = Drop measurement from rod plus header and hem allowances. Enter your dimensions below.
Window & Rod Measurements Input
Calculation Results
⚠️ Always add approximately 8 to 10 inches for top header allowances and bottom hem folds when purchasing fabric or cutting panels.