Curtain Panel Fullness Calculator
Estimate panel width for curtain fullness.
Calculate curtain panel fullness calculator from clear inputs
Curtain Panel Fullness Calculator gives a focused worksheet for home & diy questions where a quick deterministic estimate is more useful than a spreadsheet. The curtain panel fullness calculator fields mirror the variables in its formula, and the output separates the main result from supporting values so you can sanity-check this calculation before reusing it.
A 72 inch window at 2x fullness with two panels needs 144 total inches, or 72 inches per panel.
Keep the estimate private in your browser
For Curtain Panel Fullness Calculator, every calculation runs in your browser with no upload, account, cookie, live lookup, or server-side storage. The curtain panel fullness calculator result is best treated as a planning number because the real-world constraints behind this estimate can change the answer. Adjust the curtain panel fullness calculator assumptions and confirm important decisions against the relevant source of truth for that exact situation.
Frequently Asked Questions
What fullness ratio should I use?
About 2x is standard for most curtains, 2.5 to 3x gives sheers a rich look, and 1.5x suits flat, tailored panels. The default 2x on a 72 inch window needs 144 inches of fabric.
How is the width per panel calculated?
Window width × fullness gives the total fabric width, which is split evenly across the number of panels. Two panels at 144 inches total are 72 inches each.
Should I measure the window or the rod?
Measure the rod length you plan to cover. Rods usually extend 4 to 10 inches past each side of the frame so the open curtains do not block the glass.
Related tools
Browse the full set of free, private, in-browser tools.