Convert MKV to AAC — Free & Private
Extract AAC audio from MKV video files directly in your browser. No uploads, no accounts, completely free.
How to convert MKV to AAC
- 1
Select your MKV file
Click or drag your MKV file onto the converter above.
- 2
Convert to AAC
The output format is pre-set to AAC. Click the convert button to process your file.
- 3
Save instantly
Your converted AAC file is ready — save it to your device, no email required.
MKV to AAC — FAQ
Is the MKV to AAC converter really free?
Yes, completely free. No hidden fees, no watermarks, no file size limits. LocalConvert is open source and free forever.
Are my MKV files safe?
Absolutely. Your files never leave your browser. All MKV to AAC conversion happens using WebAssembly running locally on your device — no uploads, ever.
How long does MKV to AAC conversion take?
Most conversions finish in seconds. Larger files may take a little longer depending on your device's speed and memory.
What's the difference between MKV and AAC?
MKV is a flexible container format that supports multiple streams. AAC is a high-efficiency audio format used by Apple and YouTube.