Audio format converter

This free audio converter changes a file between mp3, wav, m4a, ogg, and flac, with a bitrate choice for the compressed formats. Unlike most online converters that upload your file to a server, this one runs entirely in your browser, so your audio never leaves your device. Drop a file, pick a format, and download.

In your browser
Output format
Bitrate
Drop an audio file
Converted to MP3 in your browser, never uploaded. Unlike upload-based converters, your file stays on your device.
Choose file
Runs in your browser. Nothing is uploaded. This is a free tool from Vocast.

How it works

1
Pick a format

Choose the output format, and a bitrate if it is a compressed one.

2
Add your file

Drop an audio file. It is converted on your device.

3
Download

Play it back and download. Nothing was uploaded.

Frequently asked

No. Unlike most online converters, this runs in your browser using an in-browser engine. Your file stays on your device the whole time.

Input can be most common audio and video files. Output can be mp3, wav, m4a (AAC), ogg, or flac, with a bitrate option for the compressed ones.

Converting to a lossless format (wav, flac) preserves quality. Converting to a lossy format (mp3, m4a, ogg) re-compresses, so pick a higher bitrate for better quality.

The first run downloads the in-browser engine once. After that, conversions are faster.

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Right format, then your voice

File converted. Vocast narrates your scripts in a voice cloned from your own, exporting clean audio, fully local on your Mac.

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