Convert MKV → MP3 Online — Free
Extract audio from MKV to MP3.
Drag & drop or click to browse
Accepts .mkv files up to 500 MB
Free plan includes 3 conversions/day. Need more? Talk to us →
What is a .mkv file?
MKV is a widely-used format in the Video category. Extract audio from MKV to MP3. Files in this format are commonly used across various tools, pipelines, and workflows.
What is a .mp3 file?
MP3 is a popular format in the Video ecosystem. Converting from MKV to MP3 gives you access to its unique features, broader tooling support, and improved interoperability.
How to convert MKV → MP3 online
Upload your file
Drag & drop your .MKV file onto the upload zone, or click "Browse" to select it.
Validate & preview
The tool checks the file type and size before uploading. Invalid files are rejected immediately with a clear error.
Convert on the server
Click "Convert" to upload and process your file. Server-side conversion typically takes ~60 seconds.
Download your result
When done, click "Download .MP3" to save your converted file. Files are securely deleted after 1 hour.
Frequently asked questions
Is this MKV to MP3 converter free?
Yes. The MKV → MP3 tool is free for up to 3 conversions per day. Pro (30/day) and Business (unlimited) plans unlock higher limits.
Is my file secure on the server?
Your file is uploaded over an encrypted HTTPS connection to a secure server worker. The converted file is stored temporarily and automatically deleted after 1 hour. We never share or store your files longer than necessary.
What is the maximum file size for MKV?
You can convert files up to 500 MB. If your file is larger, consider compressing it first or upgrading to a Business plan for increased limits.
What is the difference between MKV and MP3?
MKV and MP3 are both formats in the Video category, each with different use cases, tooling support, and feature sets. Extract audio from MKV to MP3.
Can I convert multiple files at once?
Batch conversion is available on Pro and Business plans. Free users convert one file at a time.