MP4 to 3GP Offline Converter
Convert MP4 videos to 3GP format completely offline in your browser
No Upload
100% Private
Free
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Drop your MP4 files here
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Output Files
Why Use This Tool
Legacy Phone Support
3GP plays on older mobile phones and feature phones with limited codec support.
Small File Size
3GP uses aggressive compression — ideal for low-bandwidth networks and SMS/MMS sharing.
100% Private
Files never leave your device. All conversion happens locally in your browser.
Frequently Asked Questions
What is 3GP format?
3GP (3rd Generation Partnership) is a multimedia container format designed for mobile phones. It uses MPEG-4 video and AAC audio with low bitrate.
Are my files uploaded anywhere?
No. Processing is entirely client-side via FFmpeg.wasm — files never leave your browser.
How big can my files be?
Limited by your device's RAM. ~2GB on desktop, smaller on mobile. Browser memory is the constraint.