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Convert MP4 to MP3 offline, for free
Pull the soundtrack out of a video, whether it’s a lecture, a podcast recording or a music video, as an MP3 that plays anywhere. No upload, no file size limit, no watermark.
Free macOS · Windows · Linux Version 0.1.1 16 downloads
How to convert MP4 to MP3
- Download nxtconvertIt’s free for macOS, Windows and Linux. Install it like any other app.
- Add your MP4 filesDrag them onto the window, or click Browse files. You can add as many as you like.
- Choose MP3Pick MP3 in the format menu next to each file, or use “Set all to” for the whole batch.
- ConvertPress Convert. Your MP3 files appear in Downloads/nxtconvert, and the originals stay untouched.
MP4 and MP3
MP4 with H.264 video plays on virtually every phone, browser, TV and editor.
MP3 is the most compatible audio format there is. Every device and car stereo plays it.
In Settings you can cap the resolution (4K down to 480p) and choose High, Balanced or Small file quality.
Why convert on your computer?
Online converters upload your MP4 files to someone else’s server, limit file sizes and often add queues or watermarks. nxtconvert does the work locally with the same engines professional tools use, so it’s private, works offline and handles large files and big batches.