How to Extract Audio from Any Video File
You don't need a paid converter or an installed video editor to pull the audio out of a video. Whether you want to save a podcast clip, grab a sound effect, or turn a lecture video into an audio file for your commute, a browser-based converter does the job in seconds — and your file never leaves your device.
MP3 or WAV — which should you pick?
MP3 compresses audio to roughly a tenth of its original size, which is ideal for phones, podcasts, and sharing. WAV is lossless, meaning it keeps every detail of the original track — better for editing, but the file is much larger. If you're not sure, choose MP3.
Step-by-step: extract audio from a video
- Open MP4 to MP3 (or Video to WAV if you want lossless output).
- Drop your video file into the upload area. MP4, MOV, WebM, and MKV are all supported.
- Wait a few seconds — the conversion runs locally via WebAssembly (FFmpeg), so the first run loads a small engine (~30 MB) once; later conversions are instant.
- Download your audio file. That's it — the video was never uploaded anywhere.
Why the first conversion takes a moment
To convert video without uploading, EZPZTool uses FFmpeg compiled to WebAssembly. The first time you use a video tool, your browser downloads this engine (about 30 MB). After that it's cached, and future conversions run at full speed — even for very large files.
Tips for clean audio
- Extract from the highest-quality source you have — MP3 can't recover detail that wasn't there.
- For editing, export WAV first, then compress to MP3 as the final step.
- Use MP4 to MP3 for video files; if you already have a music file (M4A, WAV, FLAC), keep it as-is rather than re-encoding.
Frequently asked questions
Can I extract audio from an online video (YouTube)?
No. This tool works with video files you have on your device. It won't download or process streaming video from other websites.
Is the extracted audio identical to the original?
MP3 output is compressed (lossy), so it's nearly identical but not bit-for-bit. WAV output is lossless and matches the original audio track exactly.