Interactive KDP Trim Size & Profitability Calculator
Choose the Perfect Trim Size for Your Book
Stop guessing and start calculating. This interactive guide translates complex KDP printing specs into a simple, powerful decision-making tool. Explore standard sizes, model your book's profitability, and find the perfect balance between reader experience and your bottom line.
1. Trim Size Explorer
Begin by exploring the most common trim sizes on KDP. Use the filters to narrow down the options that align with your book's genre and target audience. Click on any row to see detailed specifications and strategic notes.
| Trim Size (in) | Common Genres | Reader Feel | Format |
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2. Profit & Page Count Calculator
Enter your manuscript's details to see how trim size choice impacts everything from page count to printing cost and your final royalty. This is where strategy meets the bottom line.
Your Book's Inputs
Calculated Results
Royalty Comparison
Compare your current selection with other common sizes. Add up to two more sizes from the Explorer table by clicking them.
3. Strategic Guide
Beyond the numbers, several key factors influence the ideal trim size. Use this guide to think through the strategic positioning of your book in the market.
4. Interactive Case Studies
See how these principles work in practice. Click a case study to automatically load its data into the calculator and see the strategic decision-making process in action.