MP3 to AAC
MP3 to AAC is a free online audio converter for changing MP3 files into AAC files. MP3 to AAC accepts 2 MIME types, returns audio/aac, includes 1 setting, and runs in your browser on the device.
Drop .mp3 file here
or click to choose
Options
Key facts
- Input
- 1 format: MP3 (audio/mpeg, audio/mp3)
- Output
- AAC (audio/aac)
- Runtime
- your browser on the device
- Settings
- 1 control: AAC bitrate
- File mode
- 1 input file creates 1 output file
- Cost
- $0, no account required
How to use MP3 to AAC
- 1
Open your MP3 file
Drop your MP3 file onto the page, or click to browse and pick one from your device.
- 2
Choose options
Adjust the conversion options to suit your needs. Defaults work well for most inputs.
- 3
Convert and download
Click Convert. Your AAC file is ready to download in seconds.
MP3 to AAC details
First, MP3 to AAC reads MP3 source files and prepares AAC output for the audio workflow. Next, The visible controls are AAC bitrate. Additionally, Files and text stay in the browser session.
Re-encode an MP3 file as raw AAC. AAC generally sounds better than MP3 at the same bitrate and is the default codec for the iTunes/Apple ecosystem and most modern streaming. Because the source is already lossy, expect some quality loss in the re-encode; pick a higher bitrate if you care. Runs entirely in your browser using ffmpeg.wasm; nothing is uploaded. Expect a few seconds for a 5-minute song.
Common searches
- mp3 to aac
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- mp3 to aac converter
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- mp3 aac converter
Related tools
Tools that work with the same formats — most users open one of these next.
AAC to MP3
Convert AAC or M4A audio to MP3 — free online, no upload.
Audio Trimmer
Cut a clip from an audio file — MP3, WAV, OGG, FLAC, M4A, AAC.
MP3 to Opus
Convert MP3 audio to Opus with selectable bitrate — free online, no upload.
MP3 to M4A
Convert MP3 audio to M4A (AAC in MP4 container) — free online, no upload.
MP3 to WAV
Convert MP3 audio to uncompressed WAV — free online, no upload.
MP3 to OGG
Convert MP3 audio to Ogg Vorbis — free online, no upload.
Frequently asked
What is MP3 to AAC?
MP3 to AAC is a free online audio converter for changing MP3 files into AAC files. MP3 to AAC accepts 2 MIME types, returns audio/aac, includes 1 setting, and runs in your browser on the device.
What files does MP3 to AAC accept and create?
MP3 to AAC accepts MP3 files (audio/mpeg, audio/mp3) and creates AAC files (audio/aac). The page includes 1 setting: AAC bitrate.
Do my files and data stay private?
Yes. MP3 to AAC runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How do I use MP3 to AAC?
Open MP3 to AAC, drop in your MP3 file, choose any options, and click Convert. Your browser does the work locally and produces a AAC file you can save right away.
What is the maximum file size for MP3 to AAC?
Because MP3 to AAC runs in your browser, the maximum size depends on your device's available memory. Most modern phones and laptops handle files up to a few hundred MB without issues.