KDP123
Free KDP calculators and a checked directory of 151 Amazon KDP tools
KDP123 is a web-based directory and calculator suite for Amazon KDP self-publishers. It offers 16 free calculators (royalties, cover and spine size, KENP earnings, keyword checker, words-to-pages, ads ACoS) and a directory of 151 KDP tools organized by publishing stage (research, create, publish, market, track, learn), each listing with price, KDP fit, sources and a last-checked date. Also includes 26 KDP fact pages sourced to Amazon help documentation, market reports, and shortlists. No sign-up required; data is available as JSON and CSV under CC BY 4.0.
- Category
- Other
- Pricing
- free
- Free tier
- yes
- API
- no
- MCP server
- no
- SDK
- no
- Open source
- unknown
Listed 2026-11-11 · last verified 2026-11-11 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.8
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API
curl https://toolgrep.com/api/products/kdp123