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Curtain Size Calculator

Choose the curtain style and fullness, then enter the length and width. The tool will instantly calculate the curtain size in multiple units of measurement.

Type of Curtain:

Curtain Fullness:

(Window Width):

m ▾

(Window Height):

in ▾

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The curtain size calculator helps you determine the perfect curtain length and width based on the chosen style, fullness, and window dimensions. It makes measuring curtains simple and accurate without guesswork.

How to Measure Curtain Length

The length of a curtain depends on its style and fullness. Decide on the curtain style first, then use the appropriate formula. Our curtain pole length calculator provides the correct length for different styles.

Sill or Apron Curtains:

Curtain length = Height + Height of the rod

Café Curtains:

Curtain length = Height ÷ 2

Extra Long Curtains:

Curtain length = Height + Height of rod + 6
Add 6 inches if measuring in inches, or 15.24 cm if measuring in centimeters.

Standard Curtain Lengths Chart

Below are the common curtain lengths and their approximate conversions from inches to centimeters:

Inches	Centimeters
63	160
84	213
96	244
108	274
120	305

How to Measure Curtain Width

Measure the distance from the left to the right edge of the window frame. Enter this width into the calculator to get the recommended curtain width according to the chosen style. Typical curtain widths are 2, 2.5, or 3 times the window width.

Standard:

Curtain width = Window width × 2

Deluxe:

Curtain width = Window width × 2.5

Ultra Fullness:

Curtain width = Window width × 3

The curtain width calculator makes it easy to select the right width for standard, deluxe, and ultra-full curtains.

Standard Width Curtain Sizes Chart

Recommended widths for a curtain pair, depending on fullness:

Curtain Pair Width	Full Gather (Approx. Pole/Track Length)	Relaxed Gather (Approx. Pole/Track Length)
46 inches (117 cm)	46 inches (117 cm)	66 inches (168 cm)
66 inches (168 cm)	66 inches (168 cm)	90 inches (228 cm)
90 inches (228 cm)	90 inches (228 cm)	112 inches (284 cm)
112 inches (284 cm)	112 inches (284 cm)	157 inches (400 cm)

How the Curtain Size Calculator Works

With our Curtain Size Calculator (UK), you can quickly find the ideal curtain dimensions by entering a few key details:

Input:

Select the curtain style and fullness
Enter the desired curtain length and window width
Click Calculate

Output:

Recommended curtain length and width (in inches)

FAQs

What Are Standard Curtain Sizes?

Common curtain lengths include 84, 96, and 108 inches. Use our calculator to get precise dimensions for your window in various units.

What Is the Recommended Spacing for Curtains?

“Spacing” refers to the distance between the window frame and the end of the curtain rod. Standard spacing ranges from 4 to 10 inches.

References

From thehomehacksdiy.com: Curtain Sizes, How to Work Out Curtain Size
From homenish.com: Standard Curtain Sizes, How to Measure Curtain Size

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