AVI to MKV converter
Upload a AVI, get a polished MKV back in seconds. StandardsPDF handles the conversion in your browser so your files stay yours.
Convert AVI to MKV
Drop your files to try StandardsPDF. This tool is available in the full workspace.
Keeps the video stream and audio track in sync
Lets you pick a quality preset to balance size and clarity
Free to try with no account and no watermark
Batch several AVI files in a single conversion
How it works
Convert AVI to MKV in 3 steps
Upload or drag in your AVI file
Choose your output options if you need them
Download the finished MKV
Private by default
Files are encrypted in transit and deleted within 60 minutes.
Fast
Most jobs finish in under 10 seconds. No queueing.
No signup on free tier
5 documents per day, no credit card required.
FAQ
Frequently asked questions
How do I convert AVI to MKV?+
Upload your AVI file (or drag it onto the box above), wait a few seconds while StandardsPDF converts it in your browser, then download the MKV. There is nothing to install and no account required.
Is converting AVI to MKV free?+
Yes. AVI to MKV conversion is free on the StandardsPDF free tier – no watermark, no signup, and no credit card. A Pro tier lifts the file-size and daily limits if you need more.
Will the MKV keep the quality of my AVI?+
StandardsPDF aims for the highest fidelity the MKV format allows, so your video comes through looking as close to the original as possible. Some format-specific details may adapt where MKV works differently to AVI.
Will the audio from my AVI stay in sync in the MKV?+
Yes – when converting AVI to MKV the audio track is muxed back with the video so playback stays perfectly in sync.
Can I convert AVI to MKV on my phone?+
Yes – the AVI to MKV converter is fully responsive and works in Safari, Chrome and other modern browsers on iOS, Android and iPadOS.
How long does a AVI to MKV conversion take?+
Most AVI files convert to MKV in a few seconds. Larger or higher-resolution files take a little longer, but there is never a queue on the free tier.
Is my AVI file kept private during AVI to MKV conversion?+
Yes. Your AVI is processed in an isolated worker, never shared, and permanently deleted from our servers within 60 minutes. Most AVI to MKV conversions happen right in your browser.
Do I need to install anything to convert AVI to MKV?+
No. Converting AVI to MKV runs entirely in the browser – no desktop software, no extensions and no account for the free tier.