Convert MP3 to M4A online in seconds — free, with no sign-up. M4A is lossy and ideal for Apple devices; converted to MP3 for universal playback. Your files are encrypted and deleted automatically after 24 hours.
MP3
MP3 audio — The most compatible lossy audio format — small files that play on every device.
How to convert MP3 to M4A
- 1Upload your MP3 file
Click “Choose a file” or drag and drop your MP3 file onto the page — no sign-up or email needed.
- 2Convert to M4A
M4A is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your M4A file
Your M4A file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
MP3 vs M4A
| MP3 | M4A | |
|---|---|---|
| Full name | MP3 audio | MPEG-4 Audio |
| Type | Audio | Audio |
| Compression | Lossy | Lossy |
| Best for | music, podcasts and sharing where compatibility matters most | Apple devices; converted to MP3 for universal playback |
Frequently asked questions
Does converting MP3 to M4A lose quality?
Both MP3 and M4A use compression, so re-encoding discards a little more data. For a single conversion the change is imperceptible to the ear; just avoid repeatedly re-converting the same file.
What's the difference between MP3 and M4A?
MP3 audio (MP3) is lossy and best for music, podcasts and sharing where compatibility matters most. MPEG-4 Audio (M4A) is lossy and best for Apple devices; converted to MP3 for universal playback. Convert MP3 to M4A when you need a audio for Apple devices.
Is the MP3 to M4A converter free?
Yes — converting MP3 to M4A is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my MP3 files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert MP3 to M4A on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert MP3 to M4A?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert MP3 files to?
Besides M4A, you can convert MP3 to AAC, AIFF, FLAC, OGG, OPUS, WAV and more — see the full list of MP3 conversions below.
Other conversions
Last updated July 2026