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MKV to MP3 Converter
Convert MKV files to MP3 in seconds, free and unlimited.
🔒 Files are processed on your device. Nothing is uploaded.
How to convert MKV to MP3
- Click Choose files or drop your MKV files into the box. You can add several at once.
- Make sure MP3 is selected as the output format.
- Press Convert, then download your MP3 files.
MKV
Matroska container that can hold almost any codec, many audio tracks and subtitles.
MP3
The universal compressed audio format, playable on every device.
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 MKV conversions
- MKV to MP4
- MKV to WEBM
- MKV to MOV
- MKV to AVI
- MKV to FLV
- MKV to WMV
- MKV to MPEG
- MKV to 3GP
- MKV to OGV
- MKV to M4V
- MKV to TS
- MKV to GIF
- MKV to WAV
- MKV to OGG
- MKV to OPUS
- MKV to FLAC
- MKV to AAC
- MKV to M4A
- MKV to M4R
- MKV to WMA
- MKV to AC3
- MKV to AIFF
Convert other files to MP3
- MP4 to MP3
- WEBM to MP3
- MOV to MP3
- AVI to MP3
- FLV to MP3
- WMV to MP3
- MPEG to MP3
- MPG to MP3
- M4V to MP3
- 3GP to MP3
- 3GPP to MP3
- 3G2 to MP3
- OGV to MP3
- TS to MP3
- MTS to MP3
- M2TS to MP3
- VOB to MP3
- MXF to MP3
- DV to MP3
- MOD to MP3
- RM to MP3
- RMVB to MP3
- WAV to MP3
- OGG to MP3
- OGA to MP3
- OPUS to MP3
- FLAC to MP3
- AAC to MP3
- M4A to MP3
- M4B to MP3
- M4R to MP3
- WMA to MP3
- AC3 to MP3
- AIFF to MP3
- AIF to MP3
- AIFC to MP3
- AMR to MP3
- AU to MP3
- CAF to MP3
- VOC to MP3
- WEBA to MP3
FAQ
Is converting MKV to MP3 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 MKV 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.