Calculate Fabric Yardage For Curtains

Curtain Yardage Formula:

\[ \text{Yardage} = \frac{\text{Window Width (inches)} \times 2 \times \text{Drop (inches)}}{36} \]

Fabric Yardage Needed:

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1. What is the Curtain Yardage Formula?

The curtain yardage formula calculates how much fabric is needed to make curtains based on the window width and desired drop length. The formula accounts for the standard practice of using 2 times the window width for proper fullness in curtains.

2. How Does the Calculator Work?

The calculator uses the curtain yardage formula:

\[ \text{Yardage} = \frac{\text{Window Width} \times 2 \times \text{Drop}}{36} \]

Where:

Window Width — The width of the window in inches
Drop — The length of the curtain from top to bottom in inches
2 — Multiplier for proper curtain fullness
36 — Conversion factor from square inches to yards (1 yard = 36 inches)

Explanation: The formula calculates the total fabric area needed (width × drop) with fullness, then converts it from square inches to yards.

3. Importance of Accurate Yardage Calculation

Details: Proper yardage calculation ensures you purchase enough fabric for your curtains while minimizing waste. It accounts for pattern repeats, seam allowances, and proper drape.

4. Using the Calculator

Tips: Measure your window width accurately. Decide on your desired drop length (from rod to where you want the curtain to end). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply the width by 2?
A: Curtains need fullness to drape properly. Typically, curtains use 1.5-3 times the window width, with 2 times being a standard recommendation.

Q2: Should I add extra for hems and headers?
A: Yes, add 8-12 inches to your drop length for hems and headers before calculating yardage.

Q3: What if my fabric has a pattern repeat?
A: Add the pattern repeat measurement to your drop length for each repeat needed in the curtain length.

Q4: How do I calculate for multiple panels?
A: Divide your total width by the number of panels first, then calculate yardage for each panel separately.

Q5: What's the standard curtain drop length?
A: Common lengths are: Sill length (to windowsill), Apron length (4" below sill), Floor length (1/2" above floor), and Puddle length (6-12" extra on floor).