Free online FB2 to WAV converter

An FB2 ebook may need to become WAV when a device, audio editor, or production workflow accepts audio but not ebook files. The conversion uses text-to-speech (TTS) to read the book aloud; it does not turn the original ebook into a recording of an existing narrator.

What the FB2 format is

FB2 (FictionBook 2) is an XML-based ebook format that stores a book’s text, structure, metadata, and optional images. It is commonly used for novels and other ebooks, and is created with tools such as FictionBook Editor or exported from ebook managers such as Calibre. FBReader and Calibre can open FB2 files.

What the WAV format is

WAV is an audio container commonly used for uncompressed PCM audio. It is supported by audio editors and many playback devices, and is useful when you need audio that can be edited without first decoding a compressed format. PCM WAV files are typically much larger than compressed audio files.

How to convert FB2 to WAV

Online on 101convert.com

1. Upload the FB2 file on the 101convert.com converter page. You can add several files for batch conversion; check the page for its per-file size limit.
2. Before converting, choose the voice language and reading speed.
3. Run the conversion and download the resulting WAV file or files.

Offline with desktop software

Calibre and eSpeak NG provide an open-source command-line route on Windows, macOS, and Linux. Install both programs, then convert the ebook to plain text and synthesize speech:

1. In a terminal, run ebook-convert book.fb2 book.txt to extract the readable text.
2. Run espeak-ng -f book.txt -w book.wav to create a WAV recording.

Replace book.fb2, book.txt, and book.wav with your filenames. eSpeak NG uses its configured default voice unless you specify another voice in its command options.

Balabolka is a free Windows desktop program that can open FB2 and save synthesized speech as WAV. Open the file, then use File → Save Audio File and select WAV as the output format.

Quality and limitations

The WAV contains synthesized narration, so voice quality and pronunciation depend on the selected TTS voice; names, abbreviations, and unusual spellings may be read incorrectly. The conversion preserves spoken text rather than FB2 features such as images, typography, or ebook navigation. Uncompressed PCM output can also take substantially more storage than the source ebook.