Sailrite Formula:
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The Sailrite fabric calculation helps determine how much fabric is needed for a project based on the total project area. It converts square inches of fabric to yards.
The calculator uses the Sailrite formula:
Where:
Explanation: The equation converts square inches to square yards by dividing by the number of square inches in one square yard (36×36=1296).
Details: Accurate fabric calculation helps prevent material waste and ensures you purchase the correct amount of fabric for your project.
Tips: Measure your project area carefully in square inches. For irregular shapes, break them down into simple shapes and calculate each area separately before summing.
Q1: Why 1296 in the formula?
A: There are 1296 square inches in one square yard (36 inches × 36 inches).
Q2: Should I add extra fabric?
A: It's recommended to add 10-15% extra fabric for pattern matching, errors, and seam allowances.
Q3: How do I calculate project area?
A: For rectangular projects: length × width. For circular: π × radius². For complex shapes, divide into simple shapes.
Q4: Does this account for fabric width?
A: No, this calculates total area needed. You'll need to consider fabric width separately for layout planning.
Q5: What if my project has multiple pieces?
A: Calculate the area for each piece separately and sum them before using the calculator.