Enter the width and height of your window to determine the ideal blind size. The calculator will add extra inches to ensure proper coverage and mounting.

Blind Size Formula

The following formula is used to calculate the blind size.

BW = WW + 2
BH = WH + 2

Variables:

  • BW is the blind width (inches)
  • WW is the window width (inches)
  • BH is the blind height (inches)
  • WH is the window height (inches)

To calculate the blind size, add 2 inches to both the width and height of the window dimensions to allow for proper mounting and coverage.

What is Blind Size?

Blind size refers to the dimensions of window coverings, such as blinds or shades, that are needed to fit a window properly. It includes additional width and height to ensure the blinds cover the window frame completely and can be mounted securely. Proper blind size is crucial for achieving the desired privacy, light control, and aesthetic appeal.

How to Calculate Blind Size?

The following steps outline how to calculate the Blind Size.


  1. Measure the width of the window (WW) in inches.
  2. Measure the height of the window (WH) in inches.
  3. Add 2 inches to the window width to get the blind width (BW).
  4. Add 2 inches to the window height to get the blind height (BH).
  5. Use the calculator above to verify your measurements.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

window width (WW) = 30 inches

window height (WH) = 48 inches