Free Ebook Tools
Generators, converters and calculators for the jobs between the idea and the store. Free, with no sign-up.
Create
Ideas, titles, outlines, covers and the words around your book.
Word count to pages
Turn a word count into book or manuscript pages, or a page count into words.
Open the toolAI ebook cover generator
Get two finished ebook covers, with your title and name lettered in and spell-checked, in about a minute.
Open the toolFree AI book writer
Describe your nonfiction book and get a chapter outline and a sample chapter, free with no account.
Open the toolEbook title generator
Describe your book and get ten title and subtitle ideas that follow Amazon’s rules.
Open the toolEbook outline generator
Turn a one-line idea into a chapter-by-chapter outline, with sections and what each chapter delivers.
Open the toolBook description generator
Turn a few facts about your book into three Amazon descriptions, as plain text and KDP-ready HTML.
Open the toolEbook idea generator
Get ten ebook ideas for your niche, each with a title, an angle and a format.
Open the toolLead magnet generator
Get five ebook lead magnet ideas for your business, each with a hook, an outline and opt-in copy.
Open the toolAuthor bio generator
Turn a few facts about you into three author bios for Amazon, your back cover or your website.
Open the toolPen name generator
Generate pen names that suit your genre and look good on a book cover.
Open the toolFormat and convert
Make and check the files stores ask for. Your files never leave your browser.
Ebook cover size guide
The right cover size for every store, and a checker that tells you if your image is ready.
Open the toolEPUB checker
Check an EPUB for the problems that get files rejected by Amazon, Apple Books and Kobo, right in your browser.
Open the toolDOCX to EPUB
Convert a .docx file to a clean EPUB 3 ebook, with chapters, a table of contents and your images.
Open the toolWord to EPUB
Turn your Word manuscript into an EPUB ready for Kindle, Apple Books and Kobo, in a few clicks.
Open the toolPDF to EPUB
Turn a text PDF into a reflowable EPUB that reads well on phones and e-readers.
Open the toolMarkdown to EPUB
Turn a Markdown or plain-text manuscript into an EPUB, with chapters from your headings.
Open the toolEPUB editor
Change your EPUB’s cover, details, chapters and text in your browser, then download a checked copy.
Open the toolEbook cover mockup generator
Turn your flat cover into a 3D book mockup for sales pages, emails and social posts.
Open the toolPrint and KDP
Paperback costs, cover templates, ISBNs, keywords and categories for Amazon KDP. See every KDP tool by step
KDP print cost calculator
Work out your KDP printing cost, royalty per sale and the lowest list price you can set, from KDP’s own rates.
Open the toolSpine width calculator
Work out your paperback’s spine width and full cover size from the page count, paper and trim size.
Open the toolKDP cover template generator
Get your full KDP paperback cover size and a template with bleed, spine and barcode guides.
Open the toolISBN converter
Convert ISBN-10 to ISBN-13 and back, and check that an ISBN is valid.
Open the toolISBN barcode generator
Turn an ISBN you own into a print-ready EAN-13 book barcode, as PNG or SVG.
Open the toolKDP keyword generator
Get seven keyword phrases for your Amazon KDP listing, following KDP’s own keyword guidance.
Open the toolKDP category finder
Find the Amazon categories your book belongs in, so you can pick the best three in KDP.
Open the toolSell and earn
Royalties, prices, sales and page reads, worked out from each store’s own rules.
KDP royalty calculator
See what you earn per sale on Amazon KDP, for ebooks and paperbacks, before you set a price.
Open the toolKENP calculator
Estimate your Kindle Unlimited earnings from KENP pages read, and compare them with ebook sales.
Open the toolSelf-publishing cost calculator
Add up what publishing your book will cost, line by line, and how many copies you need to break even.
Open the toolAmazon book sales calculator
Turn a book’s Amazon Best Sellers Rank into a rough range of daily and monthly sales, and royalties.
Open the tool“Still went out the same week. That’s the part I couldn’t do on my own.”
Claire Dobson · Freelance designer, BristolDone planning? Make the book.
Koobe turns one sentence into a finished ebook with a cover and store-ready files. Your first book is free.
First book free · No card needed · Cancel anytime