Convert MKV to MP3 — Free, No Upload
Runs entirely in your browser. Nothing is sent to any server.
Why convert MKV to MP3?
MKV files are often movies or TV shows — converting to MP3 lets you extract the soundtrack or dialogue track for later. Perfect for grabbing a film score or archiving audio.
What is MKV?
MKV (Matroska) is a container that can hold multiple audio tracks, subtitles, and chapters. Popular for high-quality movie and TV rips.
What is MP3?
MP3 is the universal audio format — small file size, compatible with every device and app on the planet.
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Frequently asked questions
Is this MKV to MP3 converter really free?
Yes, completely free. No account, no credit card, no watermark, no file size limit imposed by a paywall. Convifi is free to use forever.
Is my file safe when I convert MKV to MP3?
Your file never leaves your device. All conversion happens locally in your browser using WebAssembly. There is no upload to any server — not even Convifi's.
Does this work on iPhone, Mac, and Windows?
Yes. Because it runs in the browser, it works on any device — iPhone, Android, Mac, Windows, or Linux — as long as you have a modern browser like Chrome, Safari, Firefox, or Edge.
How long does MKV to MP3 conversion take?
Conversion time depends on your file size and device. Most files convert in under 30 seconds. Longer videos or high-resolution images may take a minute or two. Nothing is being sent over the network, so your connection speed has no effect.