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Enter your box measurements in inches. Use the same orientation for all three dimensions.
Example: a box 8 inches long, 6 inches wide, and 3 inches high gives an estimated sheet size of 24 × 10.5 inches.
This is an estimate using the existing formula, including 2 inches for overlap. Allow extra for folds and paper thickness, and check the fit before cutting.
JavaScript is needed for this calculator. Formula: sheet width = 2 × length + 2 × height + 2; sheet length = box width + 1.5 × height. All dimensions are in inches.