Convert MP3 to M4A
Turn your MP3 file into an M4A that plays where you need it, right in your browser.
- Free to start
- In your browser
- Up to 500 MB
How to convert MP3 to M4A
Upload your MP3 file
Drag and drop a MP3 file, or click to browse. Up to 500 MB, and nothing is installed.
Confirm M4A as the output
M4A is already selected for your MP3. Switch between MP3 and WAV if you change your mind.
Convert and download
We convert the MP3 on our servers, usually in under a minute. Create a free account to download the M4A, or keep editing it in REQO.
Why convert MP3 to M4A?
MP3 is the universal audio format. It is lossy, so it throws away detail you are unlikely to hear, and in exchange the file is small enough to email and playable on absolutely anything.
The practical problem: Lossy, so it is not the right master format for further audio editing. No support for multiple tracks or lossless quality.
M4A solves that. Better quality than MP3 at the same bitrate, and native on Apple devices.
Container
Typical codecs
Best for
Plays on
File size
| Feature | MP3 | M4A |
|---|---|---|
| Container | MPEG audio layer III | MPEG-4 audio |
| Typical codecs | MP3 (lossy) | AAC (lossy) or ALAC (lossless) |
| Best for | Podcasts, voice notes, music you need to send | Voice memos and Apple audio exports |
| Plays on | Every device made in the last 25 years | Apple devices natively, most others too |
| File size | Roughly a tenth of uncompressed audio | Slightly smaller than MP3 at the same quality |
MP3 to M4A questions
Is the MP3 to M4A converter free?
Yes. Convert and preview the result for free, then create a free account to download it. There is no per-file charge and no watermark on the M4A itself beyond the free-plan badge.
Do I need to install any software?
No. The conversion runs on our servers and the whole flow happens in your browser, so it works the same on Windows, macOS, Linux, iPhone and Android. Nothing to install at either end. Where MP3 plays: Every device made in the last 25 years. Where the M4A you get back plays: Apple devices natively, most others too.
Does converting MP3 to M4A reduce the quality?
MP3 to M4A is a re-encode, so a small amount of detail is lost. At the default quality level the difference is inaudible on speech, and for music it stays well below what typical playback gear reveals.
How large a file can I convert?
Up to 500 MB per file, which is more footage in some formats than others. MP3: Roughly a tenth of uncompressed audio. M4A coming back: Slightly smaller than MP3 at the same quality. For anything bigger, trim or compress it first, both are free tools here.
Is my file kept private?
Your upload is processed and then held only as long as your project needs it. Nothing is published, indexed or shared unless you create a share link yourself.
Other formats
Everything else you can do here.
Convert to MP4
Convert to WebM
Convert to MOV
Convert to AVI
Convert to MKV
Convert to WMV
Convert to MP3
Convert to M4A
Convert to AAC
Convert MP3 to M4A now
Free, in your browser, and the file stays open in a full video editor afterwards.