Convert 3GPP Multimedia (.3gp) to Free Lossless Audio Codec (.flac) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .3gp 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 .flac file when it's ready.
3GP files from mobile phones store audio as AMR (narrow-band at 8 kHz) or AAC within a 3GPP multimedia container originally designed for GSM networks. FLAC (Free Lossless Audio Codec) is an open-source format that compresses audio to 50-70% of the PCM original with zero quality loss, widely supported across Linux, Android, macOS, and streaming platforms. Converting 3GP to FLAC extracts the audio and losslessly preserves every decoded sample in a compact, future-proof format.
FLAC has become the archival standard for audio preservation because it is open-source, lossless, and supported by virtually every audio player and streaming service. Unlike WAV or AIFF, FLAC compresses the data significantly while remaining bit-perfect. For 3GP voice recordings that you want to preserve indefinitely — family memories, interviews, legal recordings — FLAC offers the best balance of archival fidelity and storage efficiency. It also supports rich metadata tags (Vorbis comments) for organizing your collection.
FFmpeg extracts the audio stream from the 3GP container, decodes AMR or AAC to raw PCM, then encodes the PCM using the FLAC encoder with configurable compression level (0-12, where higher means smaller files but slower encoding). The Vorbis comment metadata system allows tagging with title, artist, date, and custom fields. Output sample rate matches the source unless resampling is specified. FLAC supports sample rates up to 655,350 Hz and bit depths up to 32.
FLAC encoding is mathematically lossless — decoding produces bit-identical PCM to the input. The quality ceiling is entirely determined by the 3GP source. AMR-NB audio at 8 kHz will remain narrow-band telephony quality; AAC sources will preserve their full frequency range. FLAC's lossless compression adds zero artifacts of its own.
| Device | 3GP | FLAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Native | Native |
| Linux | Partial | Native |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
Converting 3GP to FLAC provides optimal archival preservation of your mobile audio — lossless, compact, fully tagged, and supported everywhere for decades to come.
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8MB free, 50MB Nitro
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| Funktion | 3GP | FLAC |
|---|---|---|
| Fulde navn | 3GPP Multimedia | Free Lossless Audio Codec |
| Filendelse | .3gp | .flac |
| Bedst til | Mobile optimized | Lossless compression |