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AVI to MKV Converter
Convert AVI files to MKV in seconds, free and unlimited.
🔒 Files are processed on your device. Nothing is uploaded.
How to convert AVI to MKV
- Click Choose files or drop your AVI 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.
AVI
Audio Video Interleave, Microsoft's classic video container.
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 AVI conversions
- AVI to MP4
- AVI to WEBM
- AVI to MOV
- AVI to FLV
- AVI to WMV
- AVI to MPEG
- AVI to 3GP
- AVI to OGV
- AVI to M4V
- AVI to TS
- AVI to GIF
- AVI to MP3
- AVI to WAV
- AVI to OGG
- AVI to OPUS
- AVI to FLAC
- AVI to AAC
- AVI to M4A
- AVI to M4R
- AVI to WMA
- AVI to AC3
- AVI to AIFF
Convert other files to MKV
- GIF to MKV
- MP4 to MKV
- WEBM to MKV
- MOV to MKV
- FLV to MKV
- WMV to MKV
- MPEG to MKV
- MPG to MKV
- M4V to MKV
- 3GP 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 AVI 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 AVI 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.