Convert MP4 to MP3
Pull the audio out of any MP4 video as an MP3 that plays everywhere — music, podcasts, lectures, voice memos.
Free · No signup · Files never leave your device
Drag and drop a video file
or click to browse
Output format
Works everywhere
Other extractions
How it works
Drop your MP4 file
It stays on your device — nothing is uploaded.
Audio extracted locally
The MP3 track is extracted right in your browser via WebAssembly — the video stream is skipped, so it's fast.
Download the result
Get your MP3 file — free, no watermark.
When you need MP3 instead of MP4
MP4 is a video format, and a lot of what we record as video is really about the sound: lectures, interviews, meetings, concerts, voice notes that happened to be filmed. Converting MP4 to MP3 strips away the video stream — often 90% of the file size — and leaves a small, universal audio file you can play in any music app, share in chats without size complaints, or import into editing software that only accepts audio.
Common uses: turning a recorded Zoom or Teams meeting into a listenable file for your commute, saving the audio of a webinar or online course, extracting a song performance from a phone video, or preparing interview audio for transcription.
MP3, M4A, or WAV?
MP3 is the safe default — every device and app plays it. M4A (AAC) sounds slightly better at the same file size and often avoids a re-encode because most MP4 videos already carry AAC audio; pick it if your player supports it. WAV is uncompressed and much larger — choose it only when you plan to edit the audio afterwards and want zero generation loss. You can switch the output format on this page before or after extracting.
Frequently asked questions
Usually well under a minute. Only the audio track is decoded and re-encoded — the video stream is skipped entirely, so even long videos process quickly right in your browser.
The audio is extracted directly from the video file, so you get exactly what the video contains. MP3 and M4A re-encode at a high bitrate that is indistinguishable for speech and music; WAV is fully uncompressed.
Anything: load it into a podcast app, a DAW, or an audio editor, attach it to a message, or keep it as a lightweight copy of a lecture or meeting recording. MP3 plays on effectively every device and app made in the last 25 years.
Yes, up to 1.5 GB per file. Because only the audio track is processed, even hour-long recordings extract quickly.
Yes. The audio extractor is completely free, with no signup, watermarks, or limits. We make money from our video translation service, not from this tool.
No. The extraction happens locally in your browser using WebAssembly. Your file never leaves your device — you can even disconnect from the internet once the page has loaded.
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