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Calcimator

Curtain Calculator

Calculate fabric yardage, panel dimensions, and rod width for custom curtains and window treatments.

Inputs

in
in

Results

Panel Width (each)

63 in

≈ 11 smartphones

Panel Height (each)

78 in

≈ 13 smartphones

Total Fabric Needed5.81 yards
Curtain Rod Width60 in
Stack-Back (each side)10 in
How to Use This Calculator
  1. Enter Window Width, Window Height, and Mount Type.
  2. Set Fullness Multiplier and Number of Panels.
  3. Review Panel Width (each) (in) and Panel Height (each) (in).
  4. Use Total Fabric Needed (yards) and Curtain Rod Width to inform your decision.

How the result changes with Fullness Multiplier

Fullness MultiplierPanel Width (each)Panel Height (each)
1.239 in78 in
1.754 in78 in
2.372 in78 in
2.887 in78 in

What each input means

Window Width
Inside width of the window opening in inches.
Window Height
Inside height of the window opening in inches.
Mount Type
0 = inside mount (within frame), 1 = outside mount (above frame).
Fullness Multiplier
Fabric fullness: 1.5 = casual, 2.0 = standard, 2.5–3.0 = luxury pleated.
Number of Panels
Panel count — typically 2 for a split draw, 1 for a single panel.

What each result means

Panel Width (each)
Finished width for each panel including side hems.
Panel Height (each)
Finished height including top header and bottom hem allowances.
Total Fabric Needed
Linear yards of 54-inch-wide fabric required.
Curtain Rod Width
Recommended rod width based on mount type.
Stack-Back (each side)
Space panels occupy when fully open (each side).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Window Width = 48, Window Height = 60, Mount Type = 1, Fullness Multiplier = 2 = 5 input(s) provided
  2. Calculate Panel Width
    Panel Width
    63 = 63
  3. Calculate Panel Height
    Panel Height
    78 = 78
  4. Calculate Total Fabric Needed
    5.81 = 5.81
  5. Calculate Curtain Rod Width
    Curtain Rod Width
    60 = 60

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