Staff Tool

Curtain Fabric Calculator

Precision calculation for custom curtains
The selected unit applies to both Height and Width.
ZEDS formula: Convert measurements to inches. Height + 12 inches for folds, then ÷ 39. Width ÷ 20 gives the width count. A width result with a decimal remainder of 0.4 or below is rounded down; anything above 0.4 is rounded up.