Systems, methods, and apparatus for converting a sheet material into packaging templates can include a converting machine that performs conversion functions, such as cutting, creasing, and scoring, on the sheet material. Items to be packed into boxes formed of the packaging templates can be used as the pattern for determining the location of performance of the conversion functions on the sheet material. Accordingly, no intermediate measuring of the items may be required prior to performance of the conversion functions. Instead, longheads can be positioned adjacent to opposing sides of the items and cross heads can be advanced inward to the positioned longheads.