Audio · On-device
M4A to MP3
on iPhone & Android.
iPhone Voice Memos save as M4A, and so do most iTunes purchases. MP3 still has the widest device support — older car stereos, e-readers, museum guides, school IT systems. Fileroom converts M4A → MP3 on-device.
Free tier — 10 conversions / day, files up to 50 MB.
Why convert M4A to MP3?
- MP3 plays on every device, even ones that don't speak AAC.
- Car stereos and Bluetooth speakers often only handle MP3.
- Cross-platform sharing — Windows users sometimes can't open M4A.
- On-device — your voice memos never reach a server.
How to convert M4A to MP3
- 01
Pick the M4A
Open Fileroom and pick the M4A file from Files (Voice Memos exports there).
- 02
Choose MP3
Tap MP3 in the audio output row. Pick a bitrate — 128 kbps is plenty for voice, 256 kbps for music.
- 03
Convert
Tap Convert. The MP3 saves to Files alongside the original.
Frequently asked
- Will my voice memo sound worse as MP3?
- Going from AAC to MP3 is a generation-loss transcode, so technically yes — but at 128 kbps for voice it's inaudible. Stay on M4A if you have a choice and the destination supports it.
- Can I batch convert multiple voice memos?
- Yes — pick multiple M4A files in the picker and Fileroom converts them in parallel.
- Does the converter handle DRM-protected iTunes files?
- No. M4A files with FairPlay DRM (older iTunes Store purchases) can't be re-encoded by any third-party tool. Re-download the DRM-free version from Apple Music first.
Related conversions
Try Fileroom on your iPhone.
iPhone + iPad on the App Store — every format pair, all on-device. Android coming soon.
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