Can I extract audio from YouTube videos?

FixTheFile works with uploaded files only — you need to have the video file on your device. It cannot directly download from YouTube or other streaming services.

MP4 to MP3 converter

Convert MP4 to MP3 online — free

Q: How do I convert MP4 to MP3 for free?

Upload your MP4 file to FixTheFile and select 'Extract audio from video' or 'Convert format → MP3'. Your MP3 downloads instantly with no signup required.

Q: How large a video file can I upload?

FixTheFile supports files up to 500MB. Most MP4 videos are well within this limit.

Extract audio from any video in one click. No software, no signup, no watermark — just upload and download your MP3.

Convert MP4 to MP3 free

No watermarks
Works on mobile
First fix free, no signup

Before → after

FixTheFile AI Studio

1Upload
2Pick a fix
3Download

First fix free

1Upload
2Pick a fix
3Download

Drop any file. AI picks the fix.

Images, audio, video, PDF, Word and ZIP — up to 500MB. Or click anywhere to browse.

ImageJPG PNG WEBP GIF

AudioMP3 WAV FLAC AAC

VideoMP4 MOV AVI MKV

PDFPDF

WordDOCX

ZIPZIP

image → upscale · audio → clean noise · video → extract audio · pdf → text · zip → repair

How it works

How to convert MP4 to MP3 online

Upload your MP4 video

Drop any MP4, MOV, AVI, or MKV file — up to 500MB.

Select "Extract audio" or convert to MP3

FixTheFile strips the audio track and converts it to MP3.

Download your MP3

Your audio file is ready in seconds — full quality, no watermark.

Why FixTheFile

The fastest MP4 to MP3 converter online

No signup needed

Extract audio instantly without creating an account

Original audio quality

No re-encoding loss; extracted at source bitrate

Works with all video formats

MP4, MOV, AVI, MKV, WEBM, FLV

Also removes background noise

Clean up audio after extraction

Private and secure

Files stay available until you upload a new file or leave the page

Works on any device

Browser-based, no app or software to install

FAQ

MP4 to MP3 — common questions

Full FAQ

How do I convert MP4 to MP3 for free?+

Upload your MP4 file to FixTheFile and select "Extract audio from video" or "Convert format → MP3". Your MP3 downloads instantly with no signup required.

Does converting MP4 to MP3 lose audio quality?+

FixTheFile extracts the audio track at the original bitrate, so quality is preserved. The MP3 will sound identical to the audio in the original video.

What video formats can I convert to MP3?+

FixTheFile supports MP4, MOV, AVI, MKV, WEBM, and more. Any video file can be converted to MP3 or other audio formats like WAV or AAC.

Can I remove background noise from the extracted audio?+

Yes! After extracting your MP3, you can upload it again and use FixTheFile's noise removal tool to clean up hiss, hum, or background noise.

How large a video file can I upload?+

FixTheFile supports files up to 500MB. Most standard MP4 videos are well within this limit.

Related tools

Ready to extract your audio?

No software needed. Works on any device. First fix is free.