How to convert eBooks from one format to another and send them to your Kindle
Often the book we want to read on our eBook reader is in a format that is incompatible or just doesn’t look good. There are several ways to convert eBooks to other formats. I prefer Calibre: https://calibre-ebook.com/ This free software is ideal for converting any format to be readable on your Amazon Kindle or other eBook readers. Calibre supports Windows, macOS, Linux, Android, and iOS.
The best format for the Kindle is AZW3 or Mobi (an older format that does not support meta data).
What formats does calibre support conversion to/from?
Calibre supports the conversion of many input formats to many output formats. It can convert every input format in the following list, to every output format.
Input Formats: AZW, AZW3, AZW4, CBZ, CBR, CB7, CBC, CHM, DJVU, DOCX, EPUB, FB2, FBZ, HTML, HTMLZ, LIT, LRF, MOBI, ODT, PDF, PRC, PDB, PML, RB, RTF, SNB, TCR, TXT, TXTZ
Output Formats: AZW3, EPUB, DOCX, FB2, HTMLZ, OEB, LIT, LRF, MOBI, PDB, PMLZ, RB, PDF, RTF, SNB, TCR, TXT, TXTZ, ZIP
Here are a few other ways to convert eBooks to the format you want or need.
A long list of even more eBook converters: https://wiki.mobileread.com/wiki/E-book_conversion
There are several ways to transfer converted eBooks to your Kindle reader.
Calibre e-Book management software, using a USB cable, Wi-Fi using the Calibre content server or the Calibre Companion App for Android: https://play.google.com/store/apps/details?id=com.multipie.calibreandroid&hl=en_US&gl=US
Email to Kindle, you can email the eBook file to your Kindle’s custom email address: https://www.howtogeek.com/798894/how-to-transfer-epub-to-kindle/
Send to Kindle app for Mac: https://www.makeuseof.com/send-ebooks-to-kindle-from-iphone-ipad-mac/
Calibre FAQs: https://manual.calibre-ebook.com/faq.html