Curtain Calculator

Step 1

Use the Ripplefold Chart below to figure the fullness of your drapery below. A few things to consider when figuring your fullness:

  1. STACKBACK – The smaller the fullness, the more the coverage per ripple. Consider a smaller fullness factor if space or view is important.
  2. PRIVACY – 120% is the most common fullness for sheers for privacy.
  3. BUDGET – As the fullness increases, coverage decreases. This will increase the amount of fabric needed. If budget is important, consider a smaller fullness factor.

Step 2

Determine the width of your rod in one of two ways:

1. If there is unlimited space and you want the draperies to stack completely off of the glass, multiply the width of the glass by the stack back percentage shown on the Ripplefold chart.

2. If there is limited space, you know what the width of the rod will have to be. As noted below, you may adjust the fullness factor to manage the stack back.

Example 1:

Using 120% fullness factor, 100” glass

100 x .36 = 36 extra inches –> 136” total rod length

Stackback is determined based on the Draw:

  • A One-Way draw would require a 36” stack on the Left or Right;
  • A Center-Split draw would require an 18” stack on each side.