Sometimes the most valuable part of a video is its sound. A recorded lecture, a music performance, an interview, or a podcast uploaded as video — in all these cases, the audio is what you actually want to keep. Extracting audio from a video file means pulling out the sound track and saving it as a compact MP3 you can listen to anywhere. Here is how to do it in seconds, free, with no software to install.
Audio options
Your files are converted inside your browser and are never uploaded to any server.
Why extract audio from video?
People do this every day for very practical reasons. Students save online lectures as MP3s so they can revise while commuting. Music fans turn concert clips and music videos into songs for their playlists. Journalists and researchers extract interviews so they can transcribe or archive them. Podcast listeners grab the audio from video uploads to save mobile data. And anyone with a full phone appreciates that an MP3 is a fraction of the size of the video it came from — the same content, without the gigabytes of picture data.
Step 1: Open the converter
Go to mp4tomp3online.com in any modern browser — Chrome, Edge, Firefox, or Safari. The converter loads immediately and works on Windows, Mac, phones, and tablets. There is no account to create and nothing to download.
Step 2: Add your video file
Click the select button or drag and drop your video onto the page. It doesn’t matter which video format you have: MP4, MOV, AVI, MKV, and WEBM are all supported, as are audio files like M4A, WAV, and OGG. The converter reads the file directly in your browser, so your video never gets uploaded anywhere.
Step 3: Convert and download the MP3
Optionally adjust the quality — 192 or 320 kbps is ideal for music, 128 kbps is plenty for speech. Then hit convert. The audio is extracted on your own device within seconds, and a download button appears for your new MP3 file. That’s it: video in, audio out.
Convert several files at once
If you have a whole folder of videos — say, every lecture from a course or a batch of interview recordings — you don’t need to process them one by one. Add multiple files and they line up in a queue, each with its own progress bar. Files convert one after another automatically, and you can download each finished MP3 whenever you’re ready. It turns an afternoon of tedious work into a few minutes of waiting.
Trim exactly the part you need
Often you don’t want the entire video’s audio — just one song from a two-hour concert recording, or the key ten minutes of a long webinar. The built-in trim option lets you set a start and end time before converting, so the MP3 contains only the section you care about. It’s far quicker than converting the whole file and cutting it afterwards in an audio editor.
Which formats are supported?
For video input: MP4, MOV, AVI, MKV, and WEBM cover virtually every video you’ll encounter, from phone recordings to downloaded clips. For audio input: M4A, WAV, OGG, and MP3 itself. Everything converts to MP3 on the way out — the universal audio format that plays on every phone, computer, car stereo, and smart speaker.
Frequently asked questions
Is extracting audio from video free?
Yes. The tool is completely free with no limits on the number of files, no watermarks, and no account needed.
Will the audio quality be good?
The extracted audio keeps the quality of the video’s original sound track. Choosing 320 kbps in the options gives you the best possible result.
Is my video uploaded to a server?
No. Extraction happens entirely inside your browser on your own device. Your files are never uploaded, stored, or seen by anyone else.
Can I extract audio from a long video?
Yes. Long videos work fine — and if you only need part of one, use the trim option to set start and end times so you get exactly the section you want.