Convert 3GPP Audio (.3ga) to MPEG-4 Audio (.m4a) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .3ga file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
M4A is the standard MPEG-4 audio container used by Apple across its entire ecosystem. Every iPhone, iPad, Mac, Apple TV, and Apple Watch plays M4A natively, and it is the container format used for iTunes Store purchases, Apple Podcasts, and GarageBand exports. Converting 3GA recordings from old Samsung, Nokia, and LG phones to M4A transforms obscure mobile recordings into files that integrate seamlessly with the world's most popular consumer electronics ecosystem.
The 3GA format was a Samsung and Android-specific variant of the 3GPP container that stored voice recordings using the AMR narrowband codec. While functional on the original recording device, 3GA files are unrecognized by virtually every non-Android system. M4A, by contrast, is the universal audio container of the Apple and web era. The conversion transcodes AMR audio to AAC-LC and wraps it in the M4A container with full iTunes-compatible metadata support, making your old phone recordings indistinguishable from any other audio file in your library.
M4A is the single most important audio format for cross-platform compatibility in the Apple-dominated consumer market. It plays natively on iOS, macOS, iPadOS, watchOS, tvOS, Windows 10+, Android, and every modern web browser through the HTML5 audio element. Converting old 3GA recordings to M4A ensures they work everywhere — from your iPhone's Music app to a web page's embedded audio player.
M4A also offers superior metadata support compared to MP3. The MPEG-4 container stores Unicode text for titles and artists, embedded album artwork at arbitrary resolution, chapter markers for navigation, lyrics, and even BPM information. For organizing a large collection of converted voice recordings, M4A's rich metadata makes it possible to search, sort, and categorize recordings in ways that simpler formats do not support.
FFmpeg decodes the AMR-NB (8 kHz) or AMR-WB (16 kHz) audio from the 3GA container and re-encodes it using the AAC-LC codec at 192 kbps with 44.1 kHz sample rate. The output is wrapped in an M4A container (MPEG-4 Part 14 with audio-only flag) with proper iTunes-compatible metadata atoms. The M4A container supports full Unicode metadata, embedded artwork, chapter markers, and all the rich tagging that Apple Music and iTunes expect for proper library integration.
At 192 kbps AAC-LC, the encoding is completely transparent for AMR source material from 3G-era phones. The original AMR recording is the quality bottleneck — AMR-NB captures only 300 Hz to 3.4 kHz of bandwidth. The AAC encoder has far more headroom than needed to reproduce this content faithfully. You will hear no difference between the original 3GA and the converted M4A, but you gain universal compatibility and rich metadata support.
| Device | 3GA | M4A |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
M4A is the optimal target format for modernizing 3GA recordings from old mobile phones. The conversion creates a universally compatible file with rich metadata support, native Apple ecosystem integration, and playback compatibility across every major platform and device in use today.
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| No |
| Funktion | 3GA | M4A |
|---|---|---|
| Fulde navn | 3GPP Audio | MPEG-4 Audio |
| Filendelse | .3ga | .m4a |
| Bedst til | Mobile recording | Better than MP3 |