MKV to 3GP - Online Video Converter

Convert MKV to 3GP online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert MKV to 3GP

[+] Drop MKV video here or click to select MKV

Output format

3GP (H.264 / AAC)

No transcoding (remux only)[i]

Mode[i]

Simple Advanced

Quality[i]

Resolution[i]

About MKV to 3GP

Convert MKV to 3GP. MKV is an open container holding multiple video, audio, and subtitle tracks. The 3GP target profile packages H.264 with AAC for legacy handsets. Resolution caps apply, so expect phone-sized output..

Why convert MKV to 3GP?

Smaller files with 3GP lossy compression.
Keep animation and transparency where supported.
Private, no upload - runs in your browser.

MKV vs 3GP

Animation	Yes	Yes
Transparency	Yes	No
Compression	lossy	lossy
Typical use	MKV is an open container holding multiple video, audio, and subtitle tracks.	The 3GP target profile packages H.264 with AAC for legacy handsets.

When not to convert MKV to 3GP

Skip 3GP for archival masters: lossy compression discards detail, so keep the MKV original.
Flatten transparency first: 3GP has no alpha channel, so composite MKV over a background color.

Limits

Starting point: MKV - Multi-track container for video, audio, subtitles. Only the selected tracks carry over, so pick audio and subtitles first. Resolution caps apply, so expect phone-sized output. Encode 3GP (H.264 / AAC) from MKV at a bitrate near the source, and confirm the audio track before converting.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

Related conversions

FAQ

How do I convert MKV to 3GP?

Drop your MKV file onto this page, choose quality and codec settings, then click Convert. The result downloads as 3GP instantly. All processing runs in your browser.

What codec is used for 3GP?

The default codec for 3GP is H.264 / AAC. You can change the video and audio codec in Advanced mode.

How do you store my files?

We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.