TBN Grow

Free text to speech online – 6 languages, MP3 download

Paste your text, pick a voice and download an MP3. The AI model runs on your own computer; your text and voice are not sent to a server.

Sign in to use the tool

The tool is free; you only need a TBN Grow account. Sign up with email or Google in under a minute.

Open-source software licences

What can this tool do?

  • 25 ready-made Vietnamese voices (10 featured voices, 5 male and 5 female, plus 15 more; Northern, Central and Southern accents) that read dates, amounts and English words in a sentence correctly.
  • 28 ready-made English voices (American and British) for English videos and lessons.
  • 10 ready-made voices for Spanish, German, French and Japanese (5 male, 5 female), all from one shared model.
  • Clone your own voice from a 10–20 second recording. Each account keeps up to 5 voices for later use.
  • Download MP3 or WAV for video voice-overs, podcasts, lessons or ads.
  • Free, you only need a TBN Grow account.

How to use it

  • Step 1: Sign in and click "Load voice model". The first download is about 310 MB; after that your browser reuses the saved copy. Spanish, German, French and Japanese share a separate model of about 380 MB, also downloaded once.
  • Step 2: Choose a voice and paste your text (up to 3,000 characters at a time).
  • Step 3: Click "Create voice-over", listen and download the file.

Frequently asked questions

Are my text and voice sent to a server? No. The model runs in your browser. When you save a cloned voice, the site only stores a voice "fingerprint" of about 6 KB in your account so you can reuse it; the recording itself is never stored. You can delete a voice at any time.

What computer do I need? A computer with 8 GB of RAM or more and a recent Chrome or Edge browser. Phones and older computers may work, but slowly or without enough memory.

How long does it take? It depends on your device. On a typical computer, one minute of audio usually takes one to two minutes to create.

Whose voice may I clone? Only your own, or that of someone who has agreed to let you use it. Never use a cloned voice to impersonate or deceive anyone.

Which languages are supported? Vietnamese (ready-made voices and voice cloning), plus English, Spanish, German, French and Japanese (ready-made voices). Voice cloning currently supports Vietnamese only.

Are there rules for using the generated audio? Do not use the tool to break the law, impersonate anyone without consent, defame or deceive. When you publish content that uses these voices, state clearly that the voice is machine-generated. Details are in the Terms of use.

Does a cloned voice keep my regional accent? A cloned voice keeps the character of your voice (pitch, tone, depth). With regional accents, the pronunciation may sound closer to standard Vietnamese.