Online 3GP Video Converter
Convert MP4, MOV, AVI, MKV and other videos into 3GP files for older phones and portable players. Output always uses H.263 video and 8000 Hz mono AMR-NB audio.
Drag video files here
or use the buttons below
Supports MP4, MOV, AVI, WEBM, FLV, AMV and more
Why convert to 3GP?
3GP is not the highest-quality format, but it is still the most practical choice for older devices and low-bandwidth transfers.
Built for older devices
Feature phones, early smartphones and portable MP4 players often support 3GP, so the converted file plays without extra codecs.
Fixed H.263 output
3GP output always uses H.263 and one of the standard picture sizes, avoiding unrecognized files and playback failures.
Compact AMR-NB audio
Audio is fixed at 8000 Hz mono AMR-NB, keeping files small for Bluetooth, SD cards and slow networks.
Supported 3GP resolutions and audio settings
The H.263 encoder only accepts the five fixed sizes below. To keep conversion reliable, the default is 352x288; other sizes fail to encode.
| Container | 3GP (.3gp) |
|---|---|
| Video codec | H.263 (h263) |
| Supported sizes | 128x96 / 176x144 / 352x288 / 704x576 / 1408x1152 |
| Default size | 352x288 (CIF) |
| Audio codec | AMR-NB (amr_nb) |
| Sample rate | 8000 Hz |
| Channels | Mono (1) |
| Audio bitrate | 4.75k–12.2k, default 12.2k |
| Default frame rate | 15 fps |
H.263 has no portrait sizes. Portrait videos are fitted into the selected landscape size with black bars or cropping; the default is black bars.
When should you use 3GP?
When a device or player only accepts 3GP, it is still the most direct option.
Feature phones
Many feature phones only support 3GP video and AMR audio. Converting first lets you play the file directly.
MP4 / MP3 players
Old MP4 players, car players and portable devices usually support H.263/AMR-NB better than H.264/AAC.
Low-bandwidth transfer
3GP files are small and easy to send over Bluetooth, SD cards, message attachments or slow networks.
Legacy backups
Convert modern videos to 3GP so they can be viewed and stored on old phones or players.
How to convert a video to 3GP
No software installation. Upload a video and convert it online.
Upload a video
Choose an MP4, MOV, AVI, MKV, WEBM, FLV or other common video file from your phone or computer.
Review the 3GP settings
The page preselects 3GP, H.263, 352x288 and AMR-NB 8000 Hz. You can choose another H.263 size if needed.
Convert and download
Click start, wait for the job to finish, then download the .3gp file to your device.
What are 3GP, H.263 and AMR-NB?
3GP is a mobile multimedia container defined by 3GPP. Its file extension is .3gp, and it is common on early phones and portable players. It usually combines H.263 video with AMR-NB audio, trading quality for broad device compatibility.
The H.263 encoder only accepts five fixed sizes: 128x96, 176x144, 352x288, 704x576 and 1408x1152. That is why this page does not offer arbitrary resolutions. Portrait footage is fitted into a landscape size, which may add black bars or crop the frame.
3GP has lower quality and compression efficiency than MP4/H.264. Prefer MP4 when the device supports it, and choose 3GP only for older hardware or players that require it.
3GP conversion FAQ
What is a 3GP file?
3GP is a mobile video container defined by 3GPP. It uses the .3gp extension and is common on early phones, feature phones and portable players.
Why are 3GP resolutions limited?
3GP uses H.263, and the FFmpeg H.263 encoder only accepts five fixed sizes: 128x96, 176x144, 352x288, 704x576 and 1408x1152. Other sizes fail to encode.
Why is 3GP audio 8000 Hz?
The common 3GP audio codec AMR-NB only supports 8000 Hz mono. The converter automatically resamples and downmixes the audio for you.
Can I convert MP4 to 3GP?
Yes. Upload an MP4 and select 3GP as the output format. The video is re-encoded to H.263 and the audio is re-encoded to AMR-NB.
Is 3GP better than MP4?
MP4 offers better compatibility and quality on modern devices. 3GP is smaller and works better on feature phones and old players.
Are my files safe?
Files are used only for the current conversion and temporary files are deleted automatically. Do not upload videos with sensitive information.
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Convert your video to 3GP
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Convert your video to 3GP