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Quilt Fabric Calculator

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Calculates the amount of fabric needed for quilt backing and batting, considering seam allowances and fabric width.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Quilt Width (inches), Quilt Length (inches), Fabric Width (inches), Seam Allowance (inches) for Backing, and Seam Allowance (inches) for Batting in the units shown.

Step 2

Read Batting Length Needed (inches), Batting Width Needed (inches), Backing Length Needed (inches), Backing Width Needed (inches), Batting Fabric Needed (yards), and Backing Fabric Needed (yards) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Crib Quilt

Quilt Width (inches): 45; Quilt Length (inches): 60; Fabric Width (inches): 44 inches; Seam Allowance (inches) for Backing: 0.5; Seam Allowance (inches) for Batting: 0.5

Batting Length Needed (inches): 61 inches; Batting Width Needed (inches): 46 inches; Backing Length Needed (inches): 61 inches; Backing Width Needed (inches): 46 inches; Batting Fabric Needed (yards): 3.388888889 yards; Backing Fabric Needed (yards): 3.388888889 yards

Lap Quilt

Quilt Width (inches): 50; Quilt Length (inches): 60; Fabric Width (inches): 44 inches; Seam Allowance (inches) for Backing: 0.5; Seam Allowance (inches) for Batting: 0.5

Batting Length Needed (inches): 61 inches; Batting Width Needed (inches): 51 inches; Backing Length Needed (inches): 61 inches; Backing Width Needed (inches): 51 inches; Batting Fabric Needed (yards): 3.388888889 yards; Backing Fabric Needed (yards): 3.388888889 yards

Twin Quilt

Quilt Width (inches): 70; Quilt Length (inches): 90; Fabric Width (inches): 44 inches; Seam Allowance (inches) for Backing: 0.5; Seam Allowance (inches) for Batting: 0.5

Batting Length Needed (inches): 91 inches; Batting Width Needed (inches): 71 inches; Backing Length Needed (inches): 91 inches; Backing Width Needed (inches): 71 inches; Batting Fabric Needed (yards): 5.055555556 yards; Backing Fabric Needed (yards): 5.055555556 yards

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