Queue AAC audio
Choose one or more non-empty .aac files up to 100 MB each. Each queue row keeps its own playable source audio preview.
Free online AAC to MP3 converter
Create MP3 audio copies from AAC files.
Queue AAC files, make a fresh LAME MP3 from the first readable audio stream, then listen to and download every completed result.
- Files not stored
- Queue AAC files
- 100 MB each
Processed by our self-hosted conversion engine
Supported files
AAC in. MP3 out.
AACMP3
Add AAC audio files up to 100 MB each. Fileverses creates a new MP3 result with this route’s documented conversion profile; review the completed download before using it elsewhere.
How it works
One queue. A new MP3 file.
Create MP3 audio copies
Start the queue to have FFmpeg map the first readable audio stream from each AAC file and encode it as a new LAME MP3 using VBR quality setting 2.
Listen and download
Inspect every completed MP3 in the queue, then download that separately named audio result.
Limits and quality
A new MP3 file, with source-specific trade-offs.
Each result is a newly encoded LAME MP3 using VBR quality setting 2, not copied AAC audio. The final size and bitrate can vary, and a new encode cannot recover earlier audio detail.
Convert AAC nowAAC sources with audio
This route accepts non-empty .aac files up to 100 MB each. The selected file must be readable by the host FFmpeg installation and have a readable audio stream.
New VBR MP3 encode
Each result is a newly encoded LAME MP3 using VBR quality setting 2, not copied AAC audio. The final size and bitrate can vary, and a new encode cannot recover earlier audio detail.
First audio stream only
The profile maps only the first audio stream, removes source metadata, and excludes video. It does not preserve alternate audio tracks, subtitles, attachments, chapters, original codecs, or metadata, and has no trimming, sample-rate, channel, bitrate, or quality controls.
AAC to MP3 FAQ
Questions, answered.
What AAC files can I convert to MP3?+−
This converter accepts non-empty .aac files up to 100 MB each. FFmpeg must be able to read the AAC file and find a readable audio stream for conversion to succeed.
What does the downloaded MP3 contain?+−
A successful result is a newly encoded MP3 made with LAME VBR quality setting 2. It contains only the first readable audio stream from the AAC source.
Can I convert several AAC files at once?+−
Yes. Add multiple supported AAC files to the queue. The browser submits one real server-side conversion at a time, and every successful row receives its own MP3 player and download button.
Will the MP3 have a fixed size or restore original quality?+−
No. The LAME VBR profile does not promise a fixed bitrate or file size. A new MP3 encode cannot restore detail lost in an earlier AAC source, and final size depends on the source and encoder output.
Does this keep alternate audio tracks or metadata?+−
No. The profile maps only the first audio stream, removes source metadata, and excludes video. It does not promise alternate-track, subtitle, chapter, attachment, original-codec, or metadata preservation.
Can I choose MP3 settings or trim the audio?+−
No. This route has no trimming, stream-selection, sample-rate, channel, bitrate, or quality controls. It uses its fixed LAME VBR-quality-2 MP3 profile.
Are files kept after conversion?+−
Each source and output exists in a temporary server directory only while its conversion runs. The directory is removed whether the job succeeds or fails.