About
Your library, read aloud by natural AI voices
HirayaAI is an AI audiobook converter that turns the files you own — EPUB, PDF, and
TXT — into clear, natural-sounding MP3 audiobooks. Upload your own documents, manuscripts, study
notes, or public-domain books and listen anywhere: on your commute, at the gym, or winding down at
night.
Under the hood, lifelike text-to-speech narration reads your file from start to finish, so you can
rest your eyes and get through more of what you actually want to read. There's no app to install and
no account to create — just upload, preview, and download.
Natural voices
Lifelike AI narration
Free preview
Hear it before you pay
No account needed
Convert as a guest
Private by design
Files auto-deleted after
Listen anywhere
Play it in your favorite player
Your audiobook downloads as a standard MP3 — the most widely supported audio format on the planet, so it plays on whatever device you already own, no extras required.
Pricing
Simple, one-time pricing
Pay once per book. No subscriptions and no hidden fees. We count the words in your file and pick the right price automatically — most books are just $5.
Standard
$5
/ book
For most books and documents — up to 150,000 words.
- Full MP3 audiobook
- Choice of natural voices
- Free preview before you pay
- Secure one-time checkout
- Download link kept for 7 days
Large book
$10
/ book
For long books and epics — over 150,000 words.
- Everything in Standard
- Built for full-length, longer books
- Same natural voices
- Secure one-time checkout
- Download link kept for 7 days
Your price is set by the actual word count of your file — $5 up to 150,000 words, $10 above. You'll always see the exact price on the free preview screen before anything is charged, and checkout takes less than a minute.
FAQ
Frequently asked questions
What files can I convert?
EPUB, PDF, and TXT files that you upload. Drop in a book, a manuscript, a
report, or study notes and HirayaAI turns it into an MP3 audiobook.
What am I allowed to convert?
Files you own or have the rights to, or books in the public domain. You're
responsible for the content you upload, so please only convert material you have permission to
use.
Do I need to create an account?
No sign-up required. You convert as a guest and pay once — no passwords and
no subscription to manage.
How much does it cost?
A one-time $5 for most books and $10 for large ones — no recurring fees. We
count the words in your file and set the price automatically: $5 up to 150,000 words, $10 above.
You'll see the exact price on the preview screen before you pay.
Can I hear it before I pay?
Yes. Every file gets a free audio preview of the opening chapter, and you can
sample all the voices on the home screen — so you know exactly how it sounds first.
What if a conversion fails?
If a conversion ever fails, you're automatically refunded in full — you're never left paying for an audiobook you didn't receive.
How long do you keep my files?
Your uploads are deleted automatically shortly after conversion, and your
finished audiobook stays available to download for 7 days. We don't hold onto your content.
How natural do the voices sound?
HirayaAI uses lifelike AI narration voices built for long, comfortable
listening. Preview any of them before converting to find the one you like best.
HirayaAI
