How to convert an EPUB or PDF to audiobook for free?

Upload your EPUB or PDF file to Audiobook Maker, select a neural AI voice from our collection of over 400 options and your desired language, then click Convert. The free text-to-speech converter automatically extracts the book text — preserving the document structure and chapter divisions — and generates an audiobook in MP3 or M4B format with embedded chapters, ready to download and listen on any device (smartphone, tablet, or MP3 player). No signup or credit card is required, and there are no usage limits.

Do you support the M4B format?

Yes, Audiobook Maker can generate professional audiobooks in universal M4B format. Unlike standard MP3 files, M4B allows embedding chapters directly into the audio file, preserving structure, titles, and metadata. It is the standard audiobook format for Apple Books, iTunes, and many dedicated apps. You can also generate an MP3 file or a ZIP archive with separate chapters, depending on your needs.

How many AI voices are available and in which languages?

Audiobook Maker offers 400+ high-quality neural AI voices powered by Microsoft Edge TTS, supporting dozens of languages including English, Italian, French, Spanish, German, Chinese, Portuguese, Russian, Japanese, Korean, Arabic, Hindi, and many more. The app interface is available in 6 languages, but the text-to-speech engine supports all languages offered by the Edge TTS library. Each language includes male and female voices with different narration styles.

Are the AI voices natural-sounding?

Yes, the converter uses high-quality neural TTS voices powered by Microsoft Edge TTS, with advanced AI voice synthesis that produces natural, fluid, and pleasant voices. Unlike old robotic voices, neural voices capture prosody, intonation, and rhythm, delivering a professional listening experience comparable to human narration. You can listen to a free preview before starting the full conversion.

Do I need to install anything?

No, Audiobook Maker is an online converter that works entirely in your web browser. There is no need to download, install, or configure any software on your computer, smartphone, or tablet. Simply open the website, upload your book, and start the conversion. The entire text-to-speech process runs on our servers securely and quickly.

Is Audiobook Maker a free alternative to Speechify?

Yes. Unlike Speechify which requires a paid subscription, Audiobook Maker is 100% free, requires no signup, and offers hundreds of neural AI voices in dozens of languages with no usage limits whatsoever. You can find a detailed comparison with similar tools on AlternativeTo (https://alternativeto.net/software/audiobook-maker/about/).

What tools can I use to listen to an audiobook generated by Audiobook Maker?

The MP3 files generated by Audiobook Maker can be played with any audio player. For the best experience on Android, we recommend Smart AudioBook Player, an app specifically designed for audiobooks that remembers your listening position, supports speed adjustment, and automatically organizes chapters. On iPhone, you can use Apple's Books app or any MP3 player. Alternatively, you can use the podcast RSS feed generated by the app to listen to chapters directly in your favorite podcast app.

What is AI text optimization and what benefits does it offer?

AI text optimization is an optional step, powered by an LLM, that rewrites the text extracted from your book to make it sound natural when read aloud. It runs before speech synthesis and addresses several issues: it expands acronyms (e.g. "NASA" → "N.A.S.A." to force letter-by-letter pronunciation), spells out numbers, dates, units of measure and symbols, inserts natural pauses after titles and scene breaks, strips typographic artifacts (footnotes, inline bibliographic references, hyphenation dashes, double spaces), and fixes quotes and punctuation for smooth reading rhythm. It also prevents language drift in Multilingual voices, which sometimes pronounce sentences in the wrong language. The result is a noticeably more pleasant and professional audiobook, comparable to a curated narration. You can also download the optimized project in .abm format to reuse it, edit it, or generate new audio versions with different voices without re-running the optimization.

Can I generate a podcast from the book chapters?

Yes, Audiobook Maker can automatically generate a podcast RSS feed containing all your audiobook chapters. You can copy the feed link and add it to any podcast app such as Apple Podcasts, Spotify, Overcast, or Pocket Casts to stream chapters on demand. This feature is ideal for listening while driving, exercising, or commuting, without needing to download files to your device.

Audiobook Maker

Convert your EPUBs and PDFs into audiobooks with high-quality neural voices

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Guides

How to Convert EPUB to Audiobook M4B Format Guide Best TTS Voices for Audiobooks How to Publish a Private Podcast Free ebooks to download

Frequently Asked Questions

How to convert an EPUB to audiobook for free?

Upload your EPUB file to Audiobook Maker, select an AI voice and your desired language, then click Generate. The free text-to-speech converter will generate the audiobook in MP3/M4B format that you can download and listen to anywhere. No signup required.

What ebook formats are supported?

Audiobook Maker supports EPUB, PDF, and TXT formats. EPUB is recommended for best results. If your book is in another format (MOBI, AZW), you can convert it to EPUB first using free tools like Calibre.

How many AI voices are available?

Over 400 neural AI voices powered by Microsoft Edge TTS, supporting dozens of languages including English, Italian, French, Spanish, German, Chinese, Portuguese, Russian, Japanese and many more. Each language includes male and female voices.

Is the service really free?

Yes, Audiobook Maker is completely free. No registration required, no usage limits, and no ads inserted in the audio files. The project is supported by voluntary donations.

What is AI text optimization?

AI text optimization is an optional step that rewrites the book text for more natural listening: it expands acronyms, spells out numbers and dates, fixes punctuation and removes typographic artifacts. The result is a more pleasant and professional audiobook.

What are PREMIUM Voices?

PREMIUM Voices are a paid option that leverages cutting-edge Gemini 2.5 Flash and 3.1 Flash TTS models to generate superior-quality audiobooks with incredibly natural and expressive speech. Gemini TTS technology captures nuances, emotions and intonations with fidelity far exceeding standard voices, delivering a professional listening experience comparable to high-end human narration. Generation uses optimized chunking to preserve narrative integrity, and each PREMIUM voice is identified with the 'gemini' prefix in the voice selector.

Can I translate a book into another language and make an audiobook?

Yes. Upload an EPUB, PDF, TXT or ABM, choose the source and target language, and the AI translates the selected chapters, with optional optimization for natural narration. Download the translated book and generate the audiobook with any neural voice. It's free below a small threshold; longer books carry a small fee based on the number of characters.

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