How to Convert iPhone Voice Memos (M4A) to MP3 or WAV

Step 1: Get the memo off your iPhone

In the Voice Memos app, tap the recording, tap the three-dot button, then Share. From there you can Save to Files, AirDrop it to a Mac, or send it to yourself by email. The file arrives as .m4a.

Step 2: Choose MP3 or WAV

If the recording is going into software that will process it, choose WAV: starting from uncompressed audio means the only compression is the one at the end. For everything else, MP3 is smaller and plays anywhere.

Step 3: Convert

1. Open M4A to MP3 or M4A to WAV
2. Drop the memo in — or up to 20 at once
3. For MP3, choose 96 or 128 kbps: speech needs far less than music, and the file comes out half the size of the default with no audible difference
4. Download the result

A memo converts in a few seconds. The recording is processed in your browser tab and is never sent to a server — which matters for a recording that is someone's voice, often saying something private.

Why not just rename the file to .mp3?

Because the extension is only a label. The audio inside an .m4a is AAC, and a player that expects MP3 data will not find any. Some forgiving players look inside and play it anyway, but the devices that most need an MP3 — car stereos, older players — are exactly the ones that will not.

What converting will not do

• It will not make the recording clearer. Background noise and a distant microphone stay as they were; converting changes the format, not the sound
• It will not unlock protected audiobooks. An .m4b bought from a store is usually copy-protected and cannot be converted. Your own memos and unprotected files convert normally
• Cover art may not survive in an MP3. Title and other tags are carried across unless you switch on "Remove metadata"