M4A – MPEG-4 Audio
M4A is an MP4 container for audio, normally AAC. It is the default audio format for iTunes, iPhone voice memos and many podcasts.
More M4A conversionsDrop your M4A files here
or click to choose M4A files · up to 95MB each
How to convert M4A to MP3
- Choose your files. Click Select File or drag your M4A files into the upload box. You can add many at once.
- Pick the settings. MP3 is already selected as the output format. The conversion starts as soon as a file is added.
- Download. Each file appears in the list when it is ready. Download them one by one, or all together with Download all.
Why convert M4A to MP3?
M4A is the audio format of iPhone voice memos, iTunes and many recorders. Some car stereos, older players, Windows apps and upload forms accept only MP3. Converting makes the recording play anywhere.
When to keep the M4A
Keep the M4A for Apple devices; at the same size it often sounds slightly better than MP3.
Tips for the best result
- Voice memos and music are encoded as high-quality MP3 that keeps the original sound.
- The length and channels stay the same.
- Batch-convert many voice notes at once and download a ZIP.
Common problems and fixes
- A purchased iTunes song will not convert.
- Old iTunes songs bought before 2009 can be copy protected, and protected files cannot be converted.
- The MP3 is larger than the M4A.
- MP3 is less efficient than AAC, so it needs more space for the same sound quality.
MP3 – MPEG Audio Layer III
MP3 is the most widely supported lossy audio format. It makes music files small enough to share and plays on virtually every device.
More MP3 conversionsConverting M4A to MP3
- Your M4A file is converted on our server and the MP3 result can be downloaded straight away.
Frequently asked questions
Can I convert WhatsApp voice notes?
WhatsApp voice notes are usually OPUS or OGG files. Use OGG to MP3 or OPUS to MP3 for those.
Does M4A to MP3 lose quality?
Both formats are lossy, so the audio is compressed again, but at the quality used here the difference is very hard to hear.
How do I convert an iPhone voice memo to MP3?
Share the voice memo from the Voice Memos app and save it to Files. The file is an M4A; select it here and download the MP3.
How do I convert M4A to MP3?
Click Select File or drop your M4A file onto the upload box. The converted MP3 appears in the list below with a download button. You can add many files at once and download them together as a ZIP.
Is it really free?
Yes. There is no sign-up and no watermark. To keep the service available for everyone there is a 95MB limit per file and a cap on how many files one connection can process in a short period.
Are my files stored?
Your upload is used only to make the converted file. Images are processed in memory; other files are written to a private temporary folder that is deleted as soon as the conversion finishes. Nothing is kept after the result has been sent back.
Will quality drop?
For images, a little, by design: the image is re-encoded at the Quality you choose (default 75%). Audio and video are re-encoded with high-quality settings; documents keep their text and layout as far as the target format allows. Converting never restores detail that is already missing from the original.
How this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.