---
title: "AAC to MP3 Converter — Free, Private | Compress Pro"
description: "Convert raw AAC audio files to MP3 in your browser — recorder output and stream rips that any device accepts. No upload, no sign-up, free forever."
canonical: https://compress-pro.com/aac-to-mp3
---

# Convert AAC to MP3.

> AAC recordings become MP3s that play absolutely anywhere.

Raw .aac files — ADTS streams from voice recorders, broadcast rips and old phones — play in fewer places than they should. **Convert them to MP3 entirely in your browser**: drop the files, pick a bitrate, download audio that opens anywhere.

**No uploads · No ads · Free & open source.**

## How it works

1. Drop files anywhere on the page, click to browse, or paste with Ctrl/⌘ + V.
2. Pick a quality or preset — or set an exact target size and let the tool find it.
3. Compress, compare before/after, and download — individually or as a ZIP.

## Bare streams vs wrapped audio

Recorders and broadcast tools often write bare ADTS .aac because it needs no finalization — but players want wrapped, tagged files. MP3 is the universal answer; [M4A to MP3](https://compress-pro.com/m4a-to-mp3) covers the wrapped Apple flavor, and the [audio tool](https://compress-pro.com/compress-audio) converts either into M4A, OGG, FLAC and more.

## Frequently asked questions

### Is AAC the same as M4A?

Same codec, different wrapper. M4A is AAC inside an MP4 container; a raw .aac file is the bare ADTS stream. Both convert here — drop whichever you have.

### Does AAC to MP3 cost quality?

Both are lossy, so a little — inaudible when you pick 128 kbps or more for speech and 192 kbps for music. Choosing a bitrate above the source cannot add quality back, it only spends bytes.

### Why do some players refuse .aac?

Bare ADTS streams carry no tags and no index, and plenty of software only accepts wrapped, seekable audio. MP3 — or M4A — solves that instantly.

### Is it private?

Yes. The audio is decoded and re-encoded entirely in your browser — recordings never leave your device, and the server does nothing but deliver this page. Voice memos, interviews, demos: none of it is uploaded anywhere. Want proof? Run one file through, switch your connection off, and run another — it still works.

## Related tools

- [Convert M4A to MP3](https://compress-pro.com/m4a-to-mp3)
- [Convert MP4 to MP3](https://compress-pro.com/mp4-to-mp3)
- [Compress & Convert audio](https://compress-pro.com/compress-audio)

---

Part of [Compress Pro](https://compress-pro.com/) — every tool page has a markdown twin at `<page url>.md`. Full tool index: [llms.txt](https://compress-pro.com/llms.txt)