Free 3GP to MP4 Converter

Convert 3GP videos from old phones to MP4 right in your browser. Newer 3GP files are repackaged without re-encoding, and older phone videos are converted to H.264 so they play on today's devices. No sign-up, no watermark, and your video never leaves your device.

No file handy?

Drop your 3GP video here

or click to browse — old phone videos welcome, 3GP and 3G2

Your video never leaves your device. The conversion runs entirely in your browser. Privacy policy.

Need a different format? Use the all-in-one converter — video, audio and image formats in one tool.

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About 3GP to MP4 conversion

3GP is the video format older mobile phones recorded, and some messaging apps still use it. Many modern players and editors will not open it. Converting 3GP to MP4 here repackages newer files into MP4 without re-encoding. Older phone videos use codecs modern devices do not support, so those are converted to H.264 with AAC audio instead.

How to convert 3GP to MP4

Drag your 3GP file onto the page, or click to browse. It stays on your device.
Click Convert to MP4. The first run downloads FFmpeg (about 25 MB); after that it is fast.
Most files are repackaged without re-encoding. If one cannot be, it is re-encoded to H.264 instead, which takes longer.
Preview the MP4 on the page, then download or share it. No watermark, no sign-up.

What people use it for

Old phone videos. Rescue clips from a feature phone or early smartphone.
Messaging app videos. Convert 3GP clips so they play on a computer.
Family archives. Bring old recordings into an MP4 library.
Editing apps. Import an MP4 where a 3GP is refused.

Good to know: very old phone videos are converted rather than repackaged, which takes a little longer. Their original resolution is usually low, and converting cannot add detail that was never recorded.

Why SnipSound

100% browser-based. Other converters send your file to a server. Here your video never leaves your device.
No re-encoding when it is not needed. Repackaging keeps the original quality and finishes quickly.
No file size limit. The only limit is your device memory.
No sign-up, no watermarks.

Other conversions

All-in-one converter MOV → MP4 MKV → MP4 WebM → MP4 AVI → MP4 WMV → MP4 M4V → MP4 MP4 → MP3 Crop video GIF maker Video editor

Frequently Asked Questions

How do I convert 3GP to MP4?▼

Drop your 3GP file onto the page and click Convert to MP4. Newer files are repackaged without re-encoding; older phone videos are converted to H.264. Preview the MP4, then download it. Everything runs in your browser, and your video never leaves your device.

Will my old phone videos look better as MP4?▼

They will play on more devices, but they will not gain detail. Old phones recorded at low resolution, and converting keeps what was recorded.

Does it work with 3G2 files?▼

Yes. 3G2 is a close relative of 3GP and converts the same way.

Is my video uploaded to a server?▼

No. The conversion runs on your own device using FFmpeg compiled to WebAssembly, so your video never leaves your device.

Is there a file size limit?▼

No fixed cap. The practical limit is your device memory. 3GP files are usually small, so they convert quickly.