Curtain Panel Calculator

Your details

Measure the full width of your curtain rod or track from end to end - not the window frame. Add a few inches either side for best coverage.
in
Floor-to-ceiling: measure from the top of the rod to the floor and subtract 0.5" so the fabric just clears. Sill length: measure to the window sill.
in
The finished (not fabric) width printed on the package. Common widths are 40", 48", 54" and 72" (102, 122, 137 and 183 cm).
in
The panel type changes the recommended fullness range and the hem/header allowances added to your drop length.
Multiply the rod width by this factor to get the total fabric width. 2x is the most popular choice for opaque panels; sheers often need 3x for privacy.
Most windows use a left and right panel that meet in the middle. Turn off if you want a single panel covering the whole rod.
Only needed if you are sewing your own curtains from fabric sold by the yard. Leave at 54" if unsure - standard drapery fabric is 54" wide.
in
Enter the per-yard price to get a fabric cost estimate. Leave at 0 to skip the cost calculation.
USD
Panels needed4 panels needed
4panels

Rounded up to the nearest whole panel so you always have enough fabric

Total fabric width required144
Cut length per panel94
Total fabric yardage10.44yd
Panels needed4
Total fabric width144
Cut length per panel94

Buy 4 panels for 2x fullness.

  • You need 4 panels to cover your rod with 2x fullness.
  • 2x is within the ideal range for grommet panels (1.5x to 2x), so you will get a well-proportioned drape.
  • Each panel should be cut to 94.0 in (your drop plus hem and header allowances).

Next stepEnter a price per yard to get an estimated fabric cost. Add 10-15% extra for patterned fabrics with a repeat.

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