Convert M4A to MP3.
Apple voice memos become MP3s — converted on your device.
Drop M4A files here
or browse your files
Paste with ⌘V · or drop files anywhere on the page
Files never leave your device. Everything runs in your browser, nothing touches a server — tools you've used even work offline.
Convert M4A files — Apple’s default for Voice Memos, GarageBand exports and iTunes rips — to MP3 without uploading a second of audio. MP3 plays on everything ever made: car stereos, old players, court and HR portals, editing tools that shrug at M4A. Drop the files, pick a bitrate, download.
How it works
- Drop files anywhere on the page, click to browse, or paste with ⌘V.
- Pick a quality or preset — or set an exact target size and let the tool find it.
- Compress, compare before/after, and download — individually or as a ZIP.
Voice memos off an iPhone
Share the memo from the Voice Memos app to your Mac (AirDrop) or into a folder, drop the .m4a files here, and download MP3s that any transcription portal, lawyer, journalist tool or ancient laptop will accept. Batches convert in one go and nothing routes through a server — worth remembering when the recordings are interviews or meetings.
Bitrate picks
| Content | Bitrate |
|---|---|
| Voice memos & interviews | 96–128 kbps |
| Podcasts with music beds | 160 kbps |
| Music | 192 kbps |
When to keep M4A
If everything in your workflow already accepts M4A, converting buys nothing — M4A actually sounds better than MP3 at the same bitrate, so keep it and just compress the audio if size is the issue. Convert only when a device or upload form actually refuses the file.
Frequently asked questions
What is an M4A file?
Apple’s default audio format — what iPhones produce for Voice Memos and what Apple Music rips use. Quality for the size is excellent, but plenty of older software and hardware still refuses the format.
Will converting lose quality?
Both formats are lossy, so re-encoding costs a little — inaudible for speech at 128 kbps and above. Pick a bitrate at or above the source’s and the difference stays theoretical.
What bitrate should I use?
96–128 kbps sounds identical to the original for voice memos and interviews; use 192 kbps for music. Higher bitrates than the source contain no extra quality — they just spend bytes.
Is my audio uploaded?
No — the M4A is decoded and re-encoded to MP3 on your own device; no audio ever crosses the network, and no server keeps a copy. Want proof? Run one file through, switch your connection off, and run another — it still works.