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M4A to MP3 Converter

Convert M4A files to MP3 without installing software or uploading anything. A minute of audio goes from about 1.4 MB as M4A to about 1.4 MB as MP3.

  • Free, no sign-up
  • Files never leave your device
  • Powered by FFmpeg
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Your files are processed on this device and are never uploaded to a server.

What happens when you convert M4A to MP3

CompressionLossy → Lossy
Size per minuteM4A ≈ 1.4 MB → MP3 ≈ 1.4 MB at 192 kbps
QualityRe-encoded once more; at 192 kbps or higher the extra loss is very hard to hear
TagsTitle, artist and album tags are copied when the target format supports them
Opens inevery device, car stereo and audio app

Sizes are typical values; your files will vary with content and settings.

M4A

M4A MPEG-4 Audio

M4A is an MPEG-4 container holding AAC audio. iPhone voice memos, iTunes purchases and many recorders save M4A, and it sounds better than MP3 at the same bitrate.

M4A converter
MP3

MP3 MPEG-1 Audio Layer III

MP3 is the most compatible audio format in existence. Every phone, car stereo, browser and editor plays it, and 128 to 320 kbps gives small files that sound good for music and speech.

MP3 converter

How to use the M4A to MP3 Converter

  1. 1

    Choose a M4A file or drop it onto the page.

  2. 2

    Review the audio options. The defaults suit most files.

  3. 3

    Click Convert and download your MP3 when processing finishes.

Voice memos and iTunes audio

iPhone voice memos and iTunes downloads use M4A. Converting to MP3 makes them playable in older car stereos, Windows apps and services that only accept MP3. Files protected with DRM cannot be converted.

Why convert M4A to MP3?

M4A files come from iPhone Voice Memos, iTunes purchases and many Android recorder apps. Some older players, car stereos and upload forms only accept MP3. Choose MP3 when the audio must play on any device, car stereo or upload form.

Frequently asked questions

Will the MP3 lose quality?

Both formats are lossy, so converting re-encodes the data once more. Using a high quality setting keeps the generational loss very small. Avoid converting the same file back and forth repeatedly.

Will the MP3 be smaller than the M4A?

About the same: a minute of audio takes about 1.4 MB as M4A and about 1.4 MB as MP3 at 192 kbps. Lower the bitrate to shrink it further; 128 kbps is plenty for speech.

Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.