Convert 3GP to MP3 Online
Extract audio from legacy 3GP mobile phone videos. Free, in your browser, no file uploads.
.3gp · up to 100 MB
What you can do
Recover audio from your old mobile phone videos
Nokia and Motorola memories
Extract audio from videos recorded on early 2000s phones and convert them to MP3 for permanent preservation.
100% private
Your 3GP files never leave your device. Conversion happens in your browser.
AMR-NB to MP3
The AMR-NB audio from the original 3GP is transcoded to universally compatible MP3.
MMS files included
Compatible with 3GP videos from MMS messages, camera recordings, and Bluetooth-shared clips.
How it works
Three steps, no hassle
Upload your 3GP file
Drag or select the .3gp recorded on your Nokia, Motorola, or Samsung. No signup, no installs.
Audio extraction in the browser
The AMR-NB or AAC audio from the 3GP file is extracted and converted to MP3 directly on your device.
Download your MP3
Audio ready to play on any device, edit, or archive alongside your digital memories.
FAQ
Got questions?
3GP (3GPP File Format) was defined by the 3GPP (Third Generation Partnership Project) consortium in 1998 as the standard format for storing multimedia video and audio on 3G mobile phones. Nokia, Motorola, and Samsung adopted it massively between 2003 and 2010 because it was extremely efficient for the limited processing and storage capabilities of phones of that era. 3GP videos use H.263 or MPEG-4 Part 2 video and AMR-NB (Adaptive Multi-Rate Narrowband) audio — the same audio codec used for voice calls on GSM and UMTS networks.
The quality of the resulting MP3 is limited by the original audio recorded in the 3GP. AMR-NB, used by most 3G phones, operates at very low bit rates (4.75 to 12.2 kbps) and is optimized for the human voice, not music. If the 3GP was recorded on a later phone using AAC (more common in devices from 2008 onward), quality will be better. The conversion faithfully preserves what was in the original 3GP: it adds no quality but doesn't degrade it further either.
Yes. MMS video messages that mobile phones sent and received between 2003 and 2012 were stored internally in 3GP format because it was the standard video format supported by MMS networks. If you still have those files in phone memory, SIM card backups, or internal memory backups, you can upload those .3gp files directly to the converter to extract the audio.
Virtually all camera phones from the 2003–2010 era: Nokia Series 40 and Series 60 (N70, N95, 6600), Motorola RAZR V3 and V series, Samsung SGH (D600, E900), Sony Ericsson K750i and W series, and early Android phones (HTC Dream/T-Mobile G1 from 2008). The 3GP format was the universal standard before modern smartphones adopted MP4 as the default around 2010–2011.
AMR-NB has native compatibility on Android and iOS, but not on Windows or macOS without additional codecs. That's exactly why converting audio to MP3 is the most practical solution: MP3 has been universal since 1993 and works on absolutely any device, app, or operating system without installing anything.
Yes. Conversion happens entirely in your browser using Web Audio API and WebAssembly. Your 3GP files are never transmitted to any external server. This is especially relevant if the files contain personal or private recordings from years ago.
Convert 3GP to MP3: extract audio from your old mobile phone videos
The 3GP format has its roots in the 3GPP (Third Generation Partnership Project) standard, the telecommunications consortium founded in 1998 to define 3G mobile network protocols. Among its technical specifications was the multimedia file format for mobile devices, defined as 3GP in version 5 of the 3GPP standard (3GPP TS 26.244). Unlike modern MP4, 3GP was designed from the ground up for the extreme limitations of 2003–2008 mobile phones: ARM7 processors at 52–104 MHz, 128×160 pixel screens, and 32–128 MB memory cards. Audio in 3GP files recorded with Nokia, Motorola, and Samsung phones of that era almost invariably uses the AMR-NB codec (Adaptive Multi-Rate Narrowband, ITU-T G.722.2) — the same standard used to encode voice calls on GSM and UMTS networks. AMR-NB operates at bit rates between 4.75 and 12.2 kbps and is optimized exclusively for the human voice frequency range (300–3400 Hz), which explains the characteristic audio quality of those old mobile videos: perfectly intelligible for speech, but lacking the frequency richness needed for music or ambient sound.
The practical relevance of converting 3GP to MP3 in 2025 centers primarily on recovering digital memories stored in formats that modern hardware and software no longer handle easily. Between 2003 and 2012, millions of people worldwide used their Nokia Series 40, Nokia Series 60, Motorola RAZR, and Samsung SGH phones to record personal moments: children's first steps, family birthdays, concerts, travels. Those 3GP files remain on SD memory cards, in drawers with old phones, on backup CDs, or on external hard drives. The modern problem is twofold: first, current operating systems (Windows 11, macOS Sonoma) don't include native AMR-NB decoders, so Windows Media Player simply won't open original 3GPs; second, even if the video is technically playable in VLC, the AMR-NB audio in a 3GP container requires specific codecs not pre-installed on most systems. Extracting the audio to MP3 permanently solves the accessibility problem: the audio from those memories ends up in a format that will remain playable on any device for decades.
The technical process of extracting audio from 3GP to MP3 involves two steps: first, demultiplexing the 3GP container to separate the AMR-NB (or AAC, in 3GPs from newer devices) audio stream from the H.263 or MPEG-4 video stream; second, transcoding the audio from the original codec to MP3 (MPEG-1 Audio Layer III). The historical difficulty of this process was the need to install FFmpeg with AMR-NB support (which required the libopencore-amrnb library, not included by default in most distributions for licensing reasons). Convertir.ai resolves this by processing everything in WebAssembly inside the browser, with no installations needed. For 3GP files recorded with Samsung or Sony Ericsson phones from 2007 onward that used AAC instead of AMR-NB as the audio codec, extraction is even more straightforward. The result is an MP3 file with the complete audio from the original video, ready to archive, edit in any DAW, or listen to on any device without additional software dependencies.