Free AI Radio Ad Voiceover Generator

Paste your radio ad script, pick a voice and download the voiceover as an MP3. Add music afterwards in any audio editor.

Try it free

No sign-up needed

Start from a sample script:

230 / 500 characters

Free clips are up to 500 characters, with no sign-up and no watermark. Longer scripts, voice cloning and more voices are on the paid plans.

How it works

Write your ad as one short script with one message and one call to action, then paste it into the box above.
Choose a language and a voice, and play it back. Try two or three voices and keep the one that fits your brand.
Download the MP3, then add music and sound effects in an editor such as Audacity before you send it to the station or publish it.

How to write a radio ad script that works when spoken

Hook the listener in the first five seconds with a question, a problem or a surprising fact.
Stick to one message. A radio spot is heard once, in passing, so one idea beats three.
End with one clear call to action, and say a phone number or web address twice.
Write numbers the way they are spoken: "five five five, zero one four two" or "forty nine dollars", and spell a web address as "greenleaf coffee dot com".
Use short sentences. Add a comma for a short pause and a full stop for a longer one, then listen and adjust the punctuation.

How long should a radio ad be?

Radio spots are usually 15, 30 or 60 seconds. A common rule of thumb is about 2.5 spoken words per second, so a 15 second spot is roughly 35 to 40 words, a 30 second spot roughly 75 words and a 60 second spot roughly 150 words.

The free box above takes up to 500 characters per clip, which is about a 30 second read. Always play the audio back with a timer, because the exact length depends on the voice and your punctuation. For a 60 second spot, generate it in parts or use a paid plan with longer limits.

What this tool does and does not do

It turns your script into a spoken MP3 using standard AI voices in many languages.
It does not add background music or sound effects. Mix those in a free editor such as Audacity.
It does not offer pitch, speed or emotion sliders, and it does not have a deep trailer-style announcer voice. Use punctuation to shape the pacing.
Check your station or ad platform for its file requirements (format, length, loudness) before you submit.

Frequently asked questions

Is the radio ad voiceover generator really free?

Yes. The text to speech box is free with no sign-up and no watermark, up to 500 characters per clip. For longer scripts, voice cloning and more voices, see the paid plans.

Which file format do I get?

An MP3 file. Most online editors and many ad platforms accept MP3. If a station wants WAV, convert the MP3 in Audacity or ffmpeg and check the station's specification.

Can I add music to the voiceover?

Not inside this tool. Download the MP3, open it in a free audio editor, put a royalty-free music track underneath and lower the music while the voice speaks.

Can I make the ad in Spanish or another language?

Yes. Choose another language in the box, write the script in that language and pick one of its voices.

Can I use the audio for a paid broadcast?

You are responsible for checking the rules of the station or platform you are submitting to, including any policy on AI-generated voices. We do not provide a broadcast clearance.

Need more than a short clip?

The free box above is capped at 500 characters per clip. If you need longer scripts (up to 5,000 characters per generation), voice cloning or higher-quality voices, take a look at the plans. Nothing here is required to use the free tool.

See plans and pricing

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