Author Resources

Free Author Tools

Essential calculators for self-publishing authors. Plan your book project with accurate estimates for dimensions, editing costs, and royalties.

Book Dimensions Calculator

Estimate page count and spine width from word count. Adjust trim size, font, paper type, and cover binding.

Editing Cost Estimator

Get industry-standard cost estimates for developmental editing, line editing, copyediting, and proofreading.

Royalty Calculator

Calculate your Amazon KDP royalties for ebooks, paperbacks, and hardcovers across different marketplaces.

Word Counter

Paste or upload text to count words, characters, sentences, paragraphs, plus reading and speaking time.

ISBN Barcode Generator

Validate your ISBN and generate print-ready EAN-13 barcodes. Download as PNG or SVG for your back cover.

Plan Your Publishing Journey

Self-publishing doesn't have to be a guessing game. Our free tools help you understand the real costs and logistics of bringing your book to market. Whether you're budgeting for professional editing or calculating potential royalties, these calculators give you the information you need to make smart decisions.

All calculations are based on 2026 industry standards and Amazon KDP rates. Results are estimates and may vary based on specific circumstances.

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