How to convert MP3 to M4A
Here's how to turn your MP3 files into M4A:
- Add one or more MP3 files — drag and drop them or click to browse.
- Click Convert to M4A and let the conversion run in your browser.
- Download your new M4A files individually or as a batch.
What is MP3?
MP3 is the most popular audio format in the world. It uses lossy compression to shrink music and recordings to a fraction of their original size while keeping good sound quality, and it plays on virtually every device ever made.
What is M4A?
M4A is an audio container — usually holding AAC — used by Apple Music, iTunes and the iPhone Voice Memos app. It generally sounds better than MP3 at the same file size, but is slightly less universally supported.
MP3 vs M4A: how they compare
The two formats are suited to different tasks. Here's a side-by-side look at how they differ.
| MP3 | M4A | |
|---|---|---|
| Format type | Audio | Audio |
| Compression | Lossy | Lossy (AAC) |
| Quality | Lossy | Lossy |
| Best for | Music and podcasts | Apple Music and iTunes |
Why convert MP3 to M4A?
People convert MP3 to M4A to get a format that fits apple music and itunes and voice memos — and to make the file easier to open, share and reuse.
What M4A gives you: better quality than MP3 at equal size, default in the Apple ecosystem and good metadata support.
Where MP3 falls short: lossy — some quality is discarded, not ideal for editing or mastering and no lossless option. Converting keeps your content while moving to a format that matches where the file is going.
Tips for the best results
- You can convert several files in one go — add as many MP3 files as you like and download them together.
- Everything runs locally in your browser, so even large files convert quickly and nothing is uploaded.
MP3 to M4A — frequently asked questions
- How do I convert MP3 to M4A?
- Add your MP3 file, click Convert to M4A, and download the M4A result. The whole process happens in your browser and takes just a few seconds.
- Is it free to convert MP3 to M4A?
- Yes. This MP3 to M4A converter is completely free with no sign-up, no watermarks and no limit on the number of files you can convert.
- Are my MP3 files uploaded to a server?
- No. Conversion runs entirely on your device using your browser, so your files never leave your computer or phone.
- Will I lose quality converting MP3 to M4A?
- M4A uses lossy compression, so a small amount of detail is discarded to keep the file size down. At normal quality settings the difference is hard to notice. Keep your original MP3 if you need an exact copy.
- Can I convert multiple MP3 files at once?
- Yes. Add as many MP3 files as you like and convert them in a single batch, then download each M4A result.