Video conversion
Convert MP4 to 3GP
Updated Jul 2026
MP4 is the video format almost everything plays today, while 3GP is an older, stripped-down format built for early mobile phones with small screens and slow connections. To convert MP4 to 3GP, open the video in a converter and export it as 3GP, which shrinks the resolution and bitrate to fit. Doing this on your own computer means the video never has to be uploaded anywhere first.
- Extension
- .mp4
- Type
- Video
- Typically
- The universal video format
- Compression
- Lossy
- Extension
- .3gp
- Type
- Video
- Typically
- Old mobile phones
- Compression
- Lossy
Convert MP4 to 3GP on your own computer. Nothing uploads.
How to convert MP4 to 3GP
- Open Morphjet and drag in the MP4 video you want to convert. You can add a single clip or a whole folder at once.
- Choose 3GP as the output format. Morphjet scales the resolution and bitrate down to something an old phone can actually play.
- Convert. The 3GP file is written next to your original, and nothing leaves your machine.
MP4 vs 3GP: what actually changes
| MP4 | 3GP | |
|---|---|---|
| File size | Larger, holds more detail per second | Much smaller, built for slow mobile networks |
| Quality | High, modern compression | Low, reduced resolution and bitrate by design |
| Opens everywhere | Yes, plays on virtually any modern device | Only on old feature phones and a few legacy systems |
| Typical resolution | Up to 4K and beyond | Usually 176x144 to 320x240 |
| Audio quality | Full stereo, high bitrate | Often mono, heavily compressed |
When to convert, and when not to
Convert MP4 to 3GP if you're sending a clip to an old feature phone or need to work with a legacy system that specifically expects 3GP files, since almost nothing else does anymore.
Keep the MP4 if you're sharing with anyone on a modern phone, tablet, or computer, because 3GP throws away resolution and detail that MP4 already has in a widely compatible form.
Why not just use an online converter?
Video files are some of the largest, most personal things people convert, and uploading one to a website means handing over footage of your own life to run on a server you don't control. Converting MP4 to 3GP on your own computer skips that step entirely. The video is read from your disk, converted, and written back, without ever touching someone else's infrastructure.
Questions
Does converting MP4 to 3GP lose quality?
Yes, noticeably. 3GP was built for tiny mobile screens and slow networks, so converting to it shrinks the resolution and bitrate a lot. It's a real downgrade, not just a repackaging.
Why would anyone still convert to 3GP?
Mainly to play video on an old feature phone or to satisfy a legacy system that was built when 3GP was the mobile standard. It's rare today, but it does still come up.
Will the 3GP file keep the same audio?
The audio usually gets compressed down too, often to mono, so it will sound noticeably thinner than the MP4 original. That's part of how 3GP keeps file sizes so small.
Can I convert MP4 to 3GP without uploading the video?
Yes. A desktop app like Morphjet converts the file locally, so your video never travels over the internet to get resized into 3GP.
Should I delete the original MP4 after converting?
No, keep it. The 3GP version is a lower-quality copy meant for a specific old device, and you can't get the lost detail back if you only keep the 3GP.
Morphjet converts MP4, 3GP, and 1,800+ other formats, all on your machine. Launching this July.