This planner cover design maker creates the printed cover for a planner you publish on Amazon KDP: front art first, then the spine and back cover around it. It does not make a removable leather, fabric, or vinyl cover that slips over a planner you already own.
A planner cover design has a narrow job. Buyers scroll KDP search results at thumbnail size, so the cover has to show the year, the format, and the niche in one look: weekly or daily, dated or undated, teacher, budget, or wellness. Type the planner title, pick a style, describe one motif, and the generator returns a front cover preview you can judge before you build the wrap.
When the planner cover design works, continue to KDP Cover Creator. That is where the trim size, page count, spine width, bleed, and barcode area are set from your real interior, and where the print PDF is exported.