How to convert M4A to MP3
M4A is the format iPhones and iTunes use for voice memos and music, but many players, car stereos, and apps only accept MP3. Converting M4A to MP3 makes your audio play everywhere. Drop the files into the converter above — nothing is uploaded, everything runs on your device.
How to use Smart Convert Pro to convert M4A to MP3
- Click Choose M4A or drag and drop your M4A files (up to 50 MB each).
- Review the queue — output is set to MP3, and you can add more files at any time.
- Press Convert and wait a moment while the audio is processed on your device.
- Download each MP3 file, or save everything at once with Download all.
Why convert M4A to MP3 with Smart Convert Pro
- 100% private — Audio is converted in your browser — recordings are never uploaded to a server.
- Free and unlimited — No account, no watermark, no daily limits.
- Batch conversion — Queue multiple M4A files and convert them together.
- No software to install — Works in any modern browser on desktop and mobile.
M4A vs MP3 — quick differences
M4A (AAC audio) compresses slightly better than MP3 at the same quality, which is why Apple uses it across iPhone and iTunes.
MP3 wins on compatibility: it plays on virtually every device and app made in the last twenty-five years. When audio needs to just work anywhere, MP3 is the safe choice.
Frequently asked questions
Is this converter free?
Yes, it is completely free. There is no signup, no watermark, and no limit on how many files you can convert.
Are my files uploaded to a server?
No. Smart Convert Pro runs entirely in your browser. Files are converted on your own device and never uploaded, so nothing is stored on a server or seen by anyone else.
Can I convert iPhone voice memos to MP3?
Yes. Voice memos export as M4A files, and this tool changes them to MP3 so they play and share anywhere. Everything happens in your browser.
Does M4A to MP3 conversion lose quality?
Both are compressed formats, so a small amount of detail is re-encoded. At normal bitrates the difference is not audible for speech or casual listening.
What's the maximum file size?
Each M4A file can be up to 50 MB, and you can convert several files in one batch.