M4A to MP3 Converter
Convert M4A files to MP3 instantly — including iPhone voice memos, Apple Music exports, and any .m4a or .mp4 audio file. Files are processed securely on our server and deleted immediately after download.
iPhone users: Voice memos recorded on iOS are saved as M4A files. This tool converts them directly to MP3 — no app needed.
Drop your M4A file here
or click to browse
Accepts .m4a and .mp4 audio files · Max 100 MB
192 kbps sounds nearly identical to the original for most people. 320 kbps for audiophiles.
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✅ How to use this tool
- Drop or select your .m4a file (or iPhone voice memo) from your device.
- Choose your desired MP3 quality (192 kbps is recommended for most uses).
- Click Convert to MP3 — your file is uploaded and converted securely.
- Download your MP3 immediately. The file is deleted from our server right after.
Common Questions
How do I convert an iPhone voice memo to MP3?
iPhone voice memos are saved as .m4a files. Share the voice memo from the Voice Memos app to your computer or Files app, then upload it here. Click Convert and download your MP3.
Is my file stored on your server?
No. Your file is uploaded, converted, and the download link is generated — all within seconds. Both the input and output files are deleted from our server immediately after your download completes.
What is M4A and why convert it to MP3?
M4A is Apple's audio format (AAC codec in an MP4 container). While it's high quality, MP3 is universally supported across all devices, platforms, and players — making it the better choice for sharing.
Will I lose quality converting M4A to MP3?
Both M4A and MP3 are lossy formats, so some re-encoding happens. At 192 kbps or above, the difference is virtually undetectable in normal listening. For critical audio work, use 320 kbps.
Does it work with .mp4 files that are audio-only?
Yes. iPhone sometimes saves voice memos with a .mp4 extension. This tool accepts both .m4a and .mp4 audio files and converts them correctly to MP3.
What is the maximum file size?
The tool accepts M4A files up to 100 MB. A typical 10-minute iPhone voice memo is around 10–15 MB, so most recordings are well within the limit.
MP3 Quality Comparison
| Bitrate | File Size (3 min audio) | Best For |
|---|---|---|
| 128 kbps | ~2.8 MB | Voice memos, podcasts, casual listening |
| 192 kbps ⭐ | ~4.1 MB | General music, recommended default |
| 320 kbps | ~7.0 MB | Audiophiles, music production |
About This Tool
- Conversion uses FFmpeg with the LAME MP3 encoder — the industry standard
- Supports M4A (AAC), Apple Voice Memos, and audio-only MP4 files
- Files are never stored — input and output are deleted immediately after download
- Metadata (including GPS and device info) is stripped from output for privacy
M4A to MP3 involves re-encoding between two lossy formats. Results are for general use and not intended for professional archival.