Curtain Fabric Calculator
Standard Curtain Panels
Calculate fabric for standard curtain panels
in
in
Multiple Windows
Calculate fabric for multiple windows of the same size
in
in
Formula
Total fabric width = Window width × Fullness factor | Panels needed = Total width / Usable fabric width | Yardage = (Panels × Cut length) / 36
Frequently Asked Questions
How do I calculate fabric for curtains?
Multiply your window width by the fullness factor (usually 2x for standard gathering). Divide by usable fabric width to get the number of panels. Multiply panels by the cut length (finished length + hems). Convert total inches to yards.
What is curtain fullness?
Fullness is how much wider the fabric is than the window for gathering/pleating. 1.5x is flat/minimal, 2x is standard, 2.5x is luxurious, 3x is typical for sheers. Most curtains look best at 2-2.5x fullness.
How long should curtains be?
Sill length: to the window sill. Below sill: 4 inches below. Floor length: 1/2 inch above the floor. Puddle: 2-6 inches on the floor. Floor length is the most popular for living rooms and bedrooms.
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