MP4 to MP3
Extract MP3 audio from MP4 video.
Trim, fade & volume
Applies to every file in the queue. Volume 100% = unchanged; 200% doubles, 50% halves. Leave blank to keep the full length and original loudness.
MP3 tags (ID3)
Tags are written into every converted MP3. Leave blank to skip.
This free MP4 to MP3 converter extracts the audio track from an MP4 (or any other) video and saves it as an MP3 you can play anywhere. There is no file-size limit.
Unlike most online converters, it gives you full control: pick a variable-bitrate preset (V0–V4) or a constant bitrate from 64 to 320 kbps, set the sample rate and channels, normalize loudness to broadcast standard (EBU R128), trim to just the part you want, add fade in/out, adjust the volume, or even reverse the audio. You can also write ID3 tags — title, artist, album, year and genre — straight into the output.
Drop several videos at once to batch-convert them and download the results individually or together as a ZIP.