Video · Windows 10 and 11

Convert MP4 to MP3 on Windows, offline.

Only need the sound? Pull the audio out of a lecture, interview, podcast or music video as an MP3 you can listen to anywhere.

Nothing is uploaded
Many files at once
No sign-up
No other software needed

Download free trial →

How to convert MP4 to MP3

Select your MP4 filesIn File Explorer or on the desktop. One file, or a hundred.
Start dragging, then tap ShiftThe Convert wheel opens right under your cursor, with every format this file can become.
Drop on MP3Crustify converts on your PC and saves the result next to the original. That's it.

First time? Download Crustify and install it. It waits in the tray, using about 3 MB of memory, until you drag a file.

Convert MP4

Convert to MP3

What you get

Saved as a high-quality MP3, around 190 kbps.
The first sound track of the video is used.
Works the same for MOV, MKV, WebM, AVI and WMV videos.
Each MP3 is saved next to its original, with the same name.
Your original file is never changed. If the new name is taken, Crustify adds (1), (2) and so on.
Long files show their progress in a small panel, and you can cancel at any time.

About the formats

MP4 MPEG-4 video

The video format that plays practically everywhere: phones, TVs, browsers, WhatsApp, YouTube and every editor. With H.264 video and AAC sound inside, it is the safest choice for sharing.

MP3 MPEG Audio Layer III

The most compatible audio format: every phone, car stereo, speaker and app plays it. MP3 makes small files by discarding sound you're unlikely to hear, so it suits listening, not editing.

Questions

MP4 to MP3, answered.

Can I keep only part of the audio?

Yes. After converting, drag the MP3, tap Ctrl and choose Trim to cut it to the part you want.

Is the MP3 the same quality as the video's sound?

Close to it. MP3 at about 190 kbps sounds the same as the original to most ears.

Is Crustify free?

You can use everything free for 7 days, with no key or card. After that it's ₹49 once for a lifetime licence on up to 2 PCs. No subscription.

Convert MP4 to MP3 without uploading a thing.

Crustify converts images, video, audio, PDFs and documents on your PC, offline.