Drop a file here or click to choose
Your file stays on your device. Processing happens locally in your browser.
What is Video to MP3 / Extract Audio?
Video to MP3 is a free online tool that pulls the soundtrack out of a video file and saves it as an MP3. Choose an MP4, MOV, WebM or MKV clip and download the audio in seconds. It runs entirely in your browser, so your video is never uploaded.
Convert video to MP3 online by extracting the soundtrack. Free MP4 to MP3 and audio extractor on Fah Swe Tools — processing runs locally in your browser with WebAssembly, so your video never leaves your device.
Key features
- Video to MP3 conversion
- Works with MP4, MOV, WebM, MKV and audio files
- Reads only the audio track — the video is never re-encoded
- Runs in your browser — your video never leaves your device
Popular uses
- Get the audio of a lecture or meeting recording
- Save music or voice-over from your own video
- Create podcast audio from a video interview
Supported formats
Input: MP4, MOV, WebM, MKV and common audio files. Output: MP3 (the audio track is copied as-is when it is already MP3).
Troubleshooting
- “This file has no audio track…” The file is silent — there is nothing to extract. Check it plays with sound.
- The MP3 is quieter than expected. The tool keeps the original loudness; raise the volume in your player or an editor.
- Large file is slow on a phone. Everything runs on your device. Close other tabs or use a computer for long videos.
Also known as: MP4 to MP3, Extract Audio from Video, Audio Extractor.
How it works
- Choose a video (MP4, MOV, WebM or MKV) — it stays on your device.
- Click Run. Your browser reads only the audio track and encodes it to MP3 locally.
- Download the MP3.
FAQ
Formats?
Input: MP4, MOV, WebM, MKV or common audio files. Output: MP3.
Is my video uploaded?
No. Video to MP3 runs entirely in your browser with WebAssembly. Your file never leaves your device and is never sent to Fah Swe servers.
How do I convert MP4 to MP3?
Choose the MP4 video, click Run and download the MP3 file. The conversion happens on your device.
Is the audio quality reduced?
MP3 is compressed, but at the default bitrate speech and music sound clear.