3GP to MP4 Converter
Convert old 3GP phone videos to universal MP4, in your browser.
3GP was the standard video format for older mobile phones, and it often won't open in modern players or editors. MP4 is the universal standard that plays everywhere.
This converter rebuilds your 3GP into a clean MP4 locally — with hardware acceleration where available — and never uploads your footage.
How to convert 3GP to MP4
- 1Drop your 3GP file into the area above — or click to browse.
- 2The output format is already set to MP4. Adjust the quality settings if the format supports them.
- 3Click convert, then download your MP4 file. Everything runs locally — nothing is uploaded.
Frequently asked questions
3GP is an older mobile format that many current apps and devices have dropped support for. Converting to MP4 restores universal playback.
Yes. The conversion runs on your own device, so your videos stay private and there's no slow upload step.
No. All processing happens entirely in your browser. Your data never leaves your device — nothing is uploaded to any server.
Yes. Once the page has loaded, the tool works completely offline. For the best experience, install PrivaDeck as a PWA from your browser.
Other conversions
Need a different format?
Open the full video converter to switch between MP4, MKV and AVI, choose H.264 or H.265, and convert with hardware acceleration where available.
Open the full Video Converter