Free tool
Free, and without uploading the file: the conversion runs in your browser, and the PDF never leaves your computer.
Drop a PDF here
or
Up to 100 MB. Works with text PDFs; scanned ones (photos of pages) don't.
Single-column text: novels, essays, reports. Tables, footnotes and two-column pages can come out jumbled. Scanned PDFs have no text, only images, and can't be converted without OCR.
Kindle accepts EPUB: send it with Send to Kindle, from the web, the app or by email to your Kindle address, and Amazon converts it to its format. On a Kobo, copy it over the cable into the reader's folder. The EPUB keeps reflowable text, so you can change the font size, unlike with the PDF.
The PDF is read and the EPUB built in this tab: the file isn't uploaded. You can check it in your browser's developer tools, in the network tab. All that's sent is an anonymous usage count and, if you leave the box ticked and the book is in our catalogue, which one it is, with nothing that identifies you.