Curtain Panel Calculator — How Many Curtain Panels Do I Need?
Enter your rod width and fullness to get the number of curtain panels. No sign-up, no data stored.
Panels needed
How curtain panel count is estimated
- Fabric width (in) = rod width x fullness.
- Exact panels = ceil(fabric width / panel width).
- Order = exact, rounded up to the next even number when pairs are preferred.
- Per side = order / 2 panels on each side of the window.
Fullness is about how much fabric bunches along the rod - 1.5x barely drapes, 2x is the classic " "look for most homes, and 2.5x reads formal. Grommet and back-tab panels hang with less fullness; " "pinch pleats and pencil pleats eat fabric fast.
Rod width → panels reference
54-in standard panels, 2x fullness, rounded to even pairs.
| Rod width | Fabric needed | Exact panels | Order (pairs) |
|---|---|---|---|
| 48 in | 96 in | 2 | 2 |
| 72 in | 144 in | 3 | 4 |
| 96 in | 192 in | 4 | 4 |
| 120 in | 240 in | 5 | 6 |
| 144 in | 288 in | 6 | 6 |
Last updated: October 2026 · Assumes full-width panels that touch when closed. Sheer or narrow panels need more pieces for the same fullness.
Curtain panel FAQ
Floor-length (1/2 in above the floor) is the modern standard; sill-length reads casual. Mount " "the rod 4-6 in above the frame so panels look taller - the calculator covers width only, so pair " "it with your preferred drop when ordering.
For privacy and light control, yes - panels should overlap by 2-4 in in the center. The " "calculator's 2x fullness gives that overlap naturally; 1.5x may leave a gap on a windy rod.
Halfway between the window frame and the ceiling, or 6-8 in above the frame - whichever is " "higher. Short windows look taller with a high rod; the extra wall between rod and frame is the " "secret of designer-looking windows.
Sheer whites and warm neutrals frame the window without competing; deep colors make the window " "a feature. For pattern, keep it to one wall per room - busy print on every wall gets noisy fast.
Bedrooms and media rooms - yes. Blackout lining adds a layer and cost per panel, so count it " "into the price of each panel you order. Light-filtering is a cheaper middle ground for living rooms.
Related calculators & guides
How Many Curtain Panels Do I Need?
Fullness ratios, rod height and pairing rules for curtains.
Read the guide →