Extract Audio from Video online
Extract the audio track from your video and save it as MP3 or WAV. The audio is encoded again on the way out, so pick MP3 for a small file or WAV for a lossless one. Everything happens in your browser.
Drag a file here or click to select
MP4, MOV, MKV, AVI, and others. The file stays on your device
How long a video to MP3 conversion takes
This video to MP3 converter reads your file from disk, decodes it with the browser's own codecs and writes the MP3 or WAV on your machine, so the time depends on the clip and your processor. A three minute music video finishes in a few seconds on a modern laptop. An hour-long lecture recording takes proportionally longer, and the progress bar shows how far along it is.
Files over 2 GB are turned away, and anything above 500 MB on a desktop, or 300 MB on a phone, gets a warning before the job starts.
MP3 or WAV: file size and quality
MP3 is the answer for almost everyone. It is lossy, it plays on every phone, car stereo and messaging app, and three minutes of audio comes out around 3 to 5 MB. WAV stores the samples uncompressed at roughly 10 MB per minute, so the same three minutes is about 30 MB. That size buys you nothing unless the audio is headed into an editor for further work, where each re-encode of an MP3 would shave a little more off the top end.
Whichever format you pick, the audio gets encoded again. A track that was already a compressed AAC stream inside an MP4 can't become an MP3 without a second pass; the quality drop at these settings is small and inaudible on speech, though it isn't a lossless copy.
Which video formats load a second engine
MP4, MOV, MKV and WebM go through the browser's built-in codecs, which is the fast path. Older or odder containers, mainly AVI, WMV and FLV, are passed to a WebAssembly build of FFmpeg instead. That engine weighs about 30 MB and downloads the first time you hand it such a file, then stays cached for later runs. Same output either way: you only notice the difference on the first AVI of the day.
What to do with the audio afterwards
Extracting is usually step one. To keep just the chorus or drop a long silent intro, run the file through the MP3 cutter, which can also fade the ends so the cut does not click. Going the other direction, add music to a video puts a track back over footage. If you need the whole file in another container rather than audio alone, the video converter handles MP4, WebM and GIF. With no footage to start from at all, our AI video models (a paid feature) can generate a clip from a prompt or a still photo.
Frequently asked questions
How do I convert a video to MP3?+
Drop the video in, choose MP3, and click Extract Audio. The video track is thrown away and the sound is encoded as a fresh MP3 file, which on a short clip takes a few seconds of your own processor's time.
Should I pick MP3 or WAV?+
MP3 for anything you will listen to or send: a three minute track lands around 3 to 5 MB. WAV is uncompressed CD-quality audio at roughly 10 MB per minute, so the same three minutes weighs about 30 MB. Pick WAV only when the audio goes into an editor and will be re-encoded later anyway.
Which video formats can I pull audio out of?+
MP4, MOV, MKV and WebM run on the browser's own media engine. AVI, WMV and FLV are handled by a WebAssembly build of FFmpeg that downloads once, about 30 MB, the first time you feed it one of those. After that it is cached.
How large a file can I load?+
Files above 2 GB are refused, because a browser tab cannot hold them in memory. Past 500 MB on a computer, or 300 MB on a phone, you get a warning that the job may be slow or run out of memory. Under that, size is rarely the problem.
Does my video get uploaded to a server?+
No. The page loads the decoder into your browser and reads the file off your disk. No copy is sent anywhere, which is also why there is no sign-up and no file-retention policy to read.
Does it work on a phone?+
Yes, in mobile Safari and Chrome. Phones have less memory than laptops, so the warning threshold is lower and a long recording can take a minute or two. A 10 minute clip is comfortable; a two hour one is not.