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From M4A
to MP3.
Done.

You'll get a sound file, with no picture.

Convert my file

We don't keep your files after converting them.

Got several? Open your workspace

What do you want to convert?

Or drag it here · Up to 50 MB

Audio only

You'll get a sound file, with no picture.

MP3 uses lossy compression and plays almost anywhere, ideal for listening and sharing.

Audio up to 10 minutes. The first track is kept; switching to a lossless format doesn't bring back lost quality.

Processed only for this conversion. The original and the result are deleted from the server when it's done.

Start with what you want to do.

Pick the result. We'll set up the conversion.

Browse all formats

What file do you have?

Pick its category and we'll show you what you can do with it.

My file is PDF. I need it as…

TXTText onlyJPGOne image per pagePNGOne image per pageWEBPOne image per pageDOCXEditable contentPPTXEditable contentXLSXDetectable tablesMDEditable content

One, ten,
or all at once.

Mix formats in the same queue, check the preview and download everything in a ZIP. Unlimited files per batch, free.

Open my workspace
Memories.jpgPDF
Presentation.docxPDF
Interview.mp4MP3

Example layout · your files are only processed when you press Convert.

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Renews automatically every month. Cancel from your account. Restoring and colorizing uses 2 credits. Monthly restorations don't roll over; credits bought in packs are kept. Technical limits per file still apply: 50 MB and up to 10 minutes of audio or video.

Changing formats should be this easy.

Your files are never published and don't appear in your restoration history.

  1. 1

    Choose your file

    Select one of the 54 supported formats, up to 50 MB.

  2. 2

    Tell us the format you need

    You'll only see options that work with your file. The conditions of each conversion appear before you start.

  3. 3

    Download and get on with your day

    Save the result from this tab. If you convert a multi-page PDF to images, you'll get them together in a ZIP.

How to convert M4A to MP3

M4A is audio inside an MP4 container, usually compressed with AAC. It is the format of iPhone Voice Memos, many songs bought on iTunes and plenty of recorders. It sounds good and takes little space, but some older players, car stereos, platforms and programs only accept MP3.

This converter turns your M4A into MP3 so it plays anywhere.

Step by step

  1. Click Select file and choose the .m4a file (up to 50 MB and 10 minutes).
  2. Check that Convert to shows MP3.
  3. Click Convert audio to MP3.
  4. Download the MP3. For several voice memos, use the Workspace and download them as a ZIP.

From one lossy format to another

AAC and MP3 are both lossy. Going from one to the other decodes and recompresses the audio, which adds a small loss. To compensate, the MP3 is encoded at high-quality variable bitrate, around 190 kbps on average, enough for voice and music.

If your M4A holds lossless audio (ALAC), the MP3 will be much smaller in exchange for that compression.

Tags, cover art and limits

Metadata is not copied: a song's title, artist, album and cover art will not appear in the MP3. If you need them, add them afterwards with a tag editor.

Audio up to 10 minutes and 50 MB is accepted. DRM-protected songs from the old iTunes Store (.m4p files) cannot be converted.

Voice Memos recorded on the iPhone are often longer than 10 minutes, for example a full lecture or meeting. Cut them into parts first, for example by duplicating the memo and trimming each copy, and convert each part.

Frequently asked questions

Does it work with iPhone Voice Memos?
Yes. Voice Memos are shared as M4A and convert to MP3 fine, as long as they are 10 minutes or shorter.
Are the title and cover art kept?
No, tags and the cover image are not copied into the MP3.
Do I lose quality?
A little, because already-lossy audio is recompressed. At the bitrate used it is hard to notice.
Which is better, M4A or MP3?
AAC usually sounds slightly better at the same size; MP3 is more compatible. Convert only if you need to.