MP3 to M4A
MP3 to M4A is a free online audio converter for changing MP3 files into M4A files. MP3 to M4A accepts 2 MIME types, returns audio/mp4, 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
- M4A (audio/mp4)
- 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 M4A
- 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 M4A file is ready to download in seconds.
MP3 to M4A details
First, MP3 to M4A reads MP3 source files and prepares M4A 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 M4A; AAC inside an MP4 container, the format iTunes and the Apple ecosystem use natively. Because the source is already lossy, the re-encode will lose some quality; pick a higher bitrate if you care. Runs entirely in your browser using ffmpeg.wasm; your audio never leaves your device. Expect a few seconds for a 5-minute song.
Common searches
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Related tools
Tools that work with the same formats — most users open one of these next.
M4A to MP3
Convert M4A audio (AAC in MP4) to MP3 — free online, no upload.
Audio Trimmer
Cut a clip from an audio file — MP3, WAV, OGG, FLAC, M4A, AAC.
MP3 to AAC
Convert MP3 audio to AAC with selectable bitrate — 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.
MP3 to FLAC
Convert MP3 audio to FLAC (lossless) — free online, no upload.
Frequently asked
What is MP3 to M4A?
MP3 to M4A is a free online audio converter for changing MP3 files into M4A files. MP3 to M4A accepts 2 MIME types, returns audio/mp4, includes 1 setting, and runs in your browser on the device.
What files does MP3 to M4A accept and create?
MP3 to M4A accepts MP3 files (audio/mpeg, audio/mp3) and creates M4A files (audio/mp4). The page includes 1 setting: AAC bitrate.
Do my files and data stay private?
Yes. MP3 to M4A 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 M4A?
Open MP3 to M4A, drop in your MP3 file, choose any options, and click Convert. Your browser does the work locally and produces a M4A file you can save right away.
What is the maximum file size for MP3 to M4A?
Because MP3 to M4A 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.