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3GP to MKV Converter
Convert 3GP files to MKV in seconds, free and unlimited.
🔒 Files are processed on your device. Nothing is uploaded.
How to convert 3GP to MKV
- Click Choose files or drop your 3GP files into the box. You can add several at once.
- Make sure MKV is selected as the output format.
- Press Convert, then download your MKV files.
3GP
Mobile video format from older phones, made for small file sizes.
MKV
Matroska container that can hold almost any codec, many audio tracks and subtitles.
Video and audio are converted with FFmpeg running inside your browser. Short clips finish in seconds; long or high-resolution videos can take a few minutes because your own device does the work. Open Options to trim, resize or change quality.
Other 3GP conversions
- 3GP to MP4
- 3GP to WEBM
- 3GP to MOV
- 3GP to AVI
- 3GP to FLV
- 3GP to WMV
- 3GP to MPEG
- 3GP to OGV
- 3GP to M4V
- 3GP to TS
- 3GP to GIF
- 3GP to MP3
- 3GP to WAV
- 3GP to OGG
- 3GP to OPUS
- 3GP to FLAC
- 3GP to AAC
- 3GP to M4A
- 3GP to M4R
- 3GP to WMA
- 3GP to AC3
- 3GP to AIFF
Convert other files to MKV
- GIF to MKV
- MP4 to MKV
- WEBM to MKV
- MOV to MKV
- AVI to MKV
- FLV to MKV
- WMV to MKV
- MPEG to MKV
- MPG to MKV
- M4V to MKV
- 3GPP to MKV
- 3G2 to MKV
- OGV to MKV
- TS to MKV
- MTS to MKV
- M2TS to MKV
- VOB to MKV
- MXF to MKV
- DV to MKV
- MOD to MKV
- RM to MKV
- RMVB to MKV
FAQ
Is converting 3GP to MKV free?
Yes. Unlimited conversions, no sign-up, no watermark.
Are my files uploaded to a server?
No. FieldConvert processes files inside your browser, so your 3GP files never leave your device. That makes it private and fast, because there is no upload or download wait.
Is there a file size limit?
Only your device's memory. Files up to about 2 GB work in most desktop browsers.