M4A to MP3
Convert M4A/AAC audio to MP3.
Trim & fade options
Trim applies to every file in the queue. Leave blank to keep the full length.
This free M4A to MP3 converter turns Apple M4A and AAC audio — including iPhone voice memos, Apple Music downloads, and audiobook tracks — into MP3 files that play on any device, car stereo, or media player. There is no file-size limit.
- Bitrate & quality — variable-bitrate presets (V0, V2, V4) for the best size-to-quality balance, or fixed CBR from 320 kbps down to 64 kbps for voice.
- Sample rate & channels — keep the original, resample to 48/44.1/32/16/8 kHz, and fold to mono or keep stereo.
- Loudness normalization — EBU R128 normalize evens out quiet and loud files to a consistent level, something most online converters skip.
- Trim & fade — set start/end points and add fade-in or fade-out without a separate editor.
- Batch conversion — drop in multiple M4A files, convert them with the same settings, preview each result inline, and download them individually or all at once as a ZIP.
Will I lose quality converting M4A to MP3?
Both formats are lossy, so re-encoding discards a little detail. Choosing V0 or 320 kbps keeps the result transparent for almost all listening. For spoken-word audio like voice memos, 96 or 64 kbps mono produces much smaller files with no noticeable loss.
Does it work with iPhone voice memos and AAC files?
Yes. Voice-memo recordings, AAC audio, and M4A files exported from Apple Music or QuickTime are all accepted and converted to standard MP3.
Can I convert several files at once?
Yes. Add as many files as you like, apply one set of settings to the whole queue, and grab everything as a single ZIP when it finishes.