Merge M4A files and voice memos

To merge M4A files: choose the memos below (on iPhone, save them to Files first), order them, and press Join and export M4A. Pick MP3 instead if the file is going to a non-Apple device or app.

Step by step

1. Choose two or more M4A files, or drop them on the box. They open on this device.
2. Put them in order with the ↑ ↓ buttons.
3. Optional: add a crossfade (music) or a short gap (speech).
4. Press Join and export, then Download (or Share on a phone). The result is one M4A file.

Getting voice memos out of the iPhone app

In Voice Memos, tap a recording, tap the ••• button, then Save to Files. Do this for each part, then on this page tap Choose files and select them all from the Files app. They open in Safari on the phone; nothing is sent anywhere.

Voice memos are usually AAC inside M4A, or ALAC (lossless) if Audio Quality is set to Lossless. Both work here. A memo joined back to M4A at 128 kbps stays clear for speech and is a fraction of the ALAC size.

Gaps help speech

When parts of one talk were recorded separately, a 0.5–1 second gap makes the joins sound natural. Crossfades suit music more than speech.

Related: M4A to MP3 · M4A compressor · Merge MP3 files · Transcribe audio to text · back to the audio joiner.