Converting 3GP to MP4 takes just three steps. First, click the upload area or drag and drop your 3GP file onto the page. The file loads entirely in your browser — nothing is uploaded to any server. Next, review the file details shown (name, size, duration) and click the Convert button. The conversion happens locally using your browser's built-in processing. Once complete, click Download to save your new MP4 file. The entire process is private and secure — your files never leave your device. Works on any modern browser including Chrome, Safari, and Firefox on both mobile and desktop.
3GP is a multimedia container format developed for 3G UMTS mobile phones. It stores video and audio data compressed for smaller file sizes on older mobile devices.
MP4 offers better video quality, wider device compatibility, and supports modern codecs. Most modern devices and players don't natively support 3GP files.
Yes, completely free with no signup required. Your files are processed locally in your browser and never uploaded to any server.
No. The converter preserves the original video quality during conversion. Since MP4 supports more efficient codecs, file size may actually decrease while maintaining quality.
Yes, this tool works directly in your mobile browser. No app download needed — just open the page, select your 3GP file, and convert.