3GP to MP4 Converter
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Supports: 3GP, 3G2
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3GP is the video container older 3G mobile phones recorded to, and many modern players, editors, and phones no longer open it cleanly. Converting to MP4 fixes that: MP4 plays in Chrome, Firefox, Edge, and Safari and on virtually every current device. Because both 3GP and MP4 are built on the same ISO base media file format, the conversion is often a fast re-wrap rather than a heavy re-encode — your old clips stay watchable without inventing detail that the low-resolution source never had.
How to Convert 3GP to MP4
- Upload Your 3GP File: Drag and drop your
.3gp(or.3g2) clip onto the page, or click "+ Add Files" to browse. You can queue several at once. - Choose a Quality Preset: Leave the Preset on "Very High (Recommended)" to keep the picture as close to the source as possible, or pick a lower preset to shrink the file.
- Adjust Video Resolution (Optional): Use Video resolution to keep the original, scale by percentage, or pick a Preset Resolution. Upscaling a small 3G clip will not add real detail, so "Keep original" is usually best.
- Convert and Download: Click "Convert," then download your MP4. No sign-up, no watermark.
3GP vs MP4 at a Glance
| Property | 3GP | MP4 |
|---|---|---|
| Standard | 3GPP, released 2003 | ISO/IEC 14496-14, 2003 |
| Container base | ISO base media file format (MPEG-4 Part 12) | ISO base media file format (from QuickTime) |
| Typical video codec | H.263, MPEG-4 Part 2, H.264 | H.264, H.265/HEVC, AV1 |
| Typical audio codec | AMR-NB, AMR-WB, AAC-LC | AAC, also MP3/Opus |
| Designed for | 3G mobile recording and streaming | General-purpose video, web, modern devices |
| Modern playback | Spotty in current players and editors | ~96% of browsers play H.264-in-MP4 |
Frequently Asked Questions
Will converting 3GP to MP4 improve the video quality?
No, and no honest converter can promise it will. 3GP clips from 3G phones were usually captured at low resolutions and bitrates, and converting to MP4 cannot recover detail that was never recorded. What it does change is compatibility — the same footage becomes playable in modern browsers, editors, and devices. In our testing, leaving the Preset on "Very High" keeps the output visually indistinguishable from the source while making it widely playable.
Why won't my 3GP file play on my computer or in my editor?
3GP was built for 3G mobile phones, and support for it has thinned out in current desktop players and video editors. The file itself is usually fine; the software just lacks the right demuxer or codec. Converting to MP4 — the most widely supported video container — sidesteps the problem without you needing to install extra codec packs.
Does this also convert .3g2 files?
Yes. The .3g2 format is the 3GPP2 variant used by older CDMA-based phones; it shares the same container structure as .3gp. You can upload either extension and get an MP4 back.
Is the conversion lossless since 3GP and MP4 share the same container base?
Not guaranteed, but it can be close. Both formats are built on the ISO base media file format, so when the 3GP already uses H.264 the video stream can often be carried into MP4 with minimal re-encoding. When the source uses older codecs like H.263 or AMR audio, the streams are re-encoded to MP4-friendly codecs (H.264 and AAC), which is a generational step that keeps quality high at the default preset.
How are my uploaded 3GP files handled?
Your file is uploaded over an encrypted connection, converted on our servers, and the result is returned to you for download. Uploads are deleted automatically a few hours after conversion — no sign-up, no watermark, and your files are never shared or made public. The main practical limit on a big clip is upload time, not your device.
If you only need the soundtrack, see MP4 to MP3; to shrink a finished file, try Compress MP4.