Methodology

Calculation method

Convert each input to centimeters using 1 in = 2.54 cm. Multiply window width by the chosen fullness factor (1.2, 1.5 or 2). Reference length equals window height. Round only when displaying.

One inch is exactly 2.54 cm. Total flat width equals window width multiplied by the selected fullness; reference length equals window height. Values are calculated before display rounding. The tool does not determine panel count or finished cut length.