Convert M4A to MP3
Turn iPhone voice memos and other M4A files into MP3s that play anywhere.
10M+ files processed since 2021
More options
Free for the first hour, 10 times a day. No sign-up.
From M4A to MP3
Play M4A, then MP3.
M4A · 55 KBbecomesMP3 · 53 KB
Voice memo: ashavers on Freesound, CC BY 4.0
How to convert M4A to MP3
- 1
Add an M4A file, such as an iPhone voice memo.
- 2
Keep MP3, or choose WAV or another format.
- 3
Download your MP3.
About M4A files
Audo's M4A to MP3 converter takes M4A files of up to 10 GB without an account, and the first hour of each becomes an MP3 free, 10 times a day, with no sign-up, usually in about 4 seconds for a 3-minute file.
M4A is audio in Apple's MP4 file format. The sound inside is usually AAC, and sometimes Apple Lossless. iPhone voice memos are M4A, and so are songs bought on the iTunes Store and the audio-only file Zoom saves next to its video recordings.
Some players, car stereos, websites, and upload forms take only MP3. Going from AAC to MP3 is one lossy format to another, so a little detail is lost, but the MP3 keeps about the same bitrate as your M4A, and most people hear no difference.
Questions
How do I convert M4A to MP3?
Add the M4A here, leave MP3 selected, and download the result. It's the same on a Mac, a Windows PC, or a phone, in any browser, with nothing to install.
Is there a free M4A to MP3 converter?
Yes. Audo converts the first hour of each M4A to MP3 free, 10 times a day, with no account. Songs and most voice memos are shorter than that, so they convert in full; longer memos are $0.01 a minute ($0.60 an hour) with no subscription (see pricing).
How do I convert an M4A to MP3 on my iPhone?
In Voice Memos, save the memo to Files, then open this page in Safari and add it from there. A memo recorded as Apple Lossless still ends in .m4a, and its MP3 is made at 192 kbps.
Is M4A an MP3 file?
No. They're different formats: an M4A usually holds AAC sound, in the file format Apple uses for iTunes songs and voice memos. MP3 is older and plays on more players, car stereos, and upload forms.
Which sounds better, M4A or MP3?
At the same bitrate, M4A's AAC sound is usually a little better. Converting can't add anything back, so choose MP3 for where it plays, not for the sound.
Can I convert songs from Apple Music?
Not songs from an Apple Music subscription: they're protected, so they only play in Apple's apps. Songs bought on the iTunes Store aren't protected, and convert like any other M4A.
How big will the MP3 be?
About as big as the M4A. A song bought on iTunes at 256 kbps becomes a 256 kbps MP3. For a smaller file, pick a lower bitrate under More options.
Can I get a WAV instead?
Yes. Pick WAV under Convert to, or use M4A to WAV, made for editing. A WAV keeps everything in the M4A, but it's much bigger: about 10 MB a minute at CD quality.
More tools
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- File infoLength, format and more.
- Audio enhancerMake any recording sound studio‑quality.
- Remove noiseClears the background, keeps your voice.
- Remove echoMake voices sound close.
- Vocal removerSeparate vocals, music, and stems.
- Stem splitterSplit vocals, drums, and bass.
- Karaoke makerRemove vocals, keep the music.
- Change pitchMove the key up or down.
- Change speedSpeed up or slow down audio.
For AI assistants and developers
Ask ChatGPT, Claude, or a coding agent to do this for you, or call it from your own code. When an agent's free result is cut short, it gives you a link to finish the whole file, no sign-up.
Show the free API call
curl -F file=@voice-memo.m4a -F format=mp3 https://audo.ai/api/try/convert -D response.headers -o response.body