About FillerPlan

FillerPlan is a focused planning tool for cabinet installers, DIY remodelers, and small shops that need cabinet filler strip dimensions without opening full kitchen design software.

Enter the opening width at the top and bottom, the total cabinet run, left and right clearance needs, stock strip size, and scribe allowance. The calculator returns top and bottom filler widths, taper notes, stock count, warnings, and a printable cut list.

The estimates are meant for field planning. Always verify the cabinet system instructions, appliance manuals, hardware projection, finished wall conditions, and actual site measurements before cutting.