Extract Audio from Video Online Free
Convert any video to audio with CutKarlo. Extract the full audio track from MP4, MOV, or WebM files and download it as MP3 or WAV — instantly, in your browser. No upload limits, no account needed.
Works in browser · No install · Free trial
Use Cases
Extract podcast audio
Pull the audio track from a video recording and use it as your podcast episode.
Extract background music
Separate the music track from a video to identify or reuse it.
Transcribe speech
Extract the audio first, then use CutKarlo AI to transcribe and edit the speech.
Make audio-only content
Turn YouTube videos, webinars, or lectures into audio for listening on the go.
Frequently Asked Questions
How do I extract audio from a video online for free?
Open CutKarlo, upload your video file, and click Extract Audio. The audio track is extracted and available for download in MP3 or WAV format.
What is the maximum video file size?
CutKarlo processes files entirely in your browser so the limit depends on your device memory. Most videos under 2 GB work without issues.
Can I extract just a portion of the audio?
Yes. CutKarlo's timeline editor lets you select any section of the video and extract only that segment's audio.
Need the audio? Just extract it.
CutKarlo converts your video to audio in seconds — no desktop app needed.
Extract Audio Now →