MP4 to MP3 converter
Save the sound of an MP4 video as an MP3 file. Pick a bitrate, then download. It runs in your browser; nothing is uploaded.
Drop a video
or drop it here, or paste. Up to 500 MB per file.
Runs in your browser. Your files are not uploaded.
Formats: the format list shows only what this browser can encode. MP3 and FLAC use an encoder that downloads the first time you choose them. M4A (AAC) is not available in every Firefox version.
Memory: audio is decoded in full, about 23 MB per minute of 48 kHz stereo, so long recordings can be slow on phones. Files that would need more than about 1 GB once decoded (about 45 minutes of 48 kHz stereo, or 90 of mono) are refused before decoding.
How to use MP4 to MP3 converter
Drop an MP4 file on the page.
Keep MP3 as the format; pick 192 kbps or more for music, less for speech.
Select Apply and wait while the sound is extracted.
Download the MP3.
Questions
No. Everything runs in your browser and the file never leaves your device.
The tool reports an error, because there is no audio to extract.
Your MP4 is not changed. You get a separate MP3 with the sound only.
Related tools
- Extract audio from video: MP4 to MP3Save the soundtrack of an MP4, MOV, WebM or MKV video as an audio file, without re-encoding when possible.
- Voice recorderRecord from your microphone and save the recording in the format you choose.
- Convert audioConvert audio to MP3, M4A, WAV, OGG, WebM or FLAC, with bitrate, sample rate and channel options.
- Compress audioMake audio files smaller by choosing a lower bitrate or a target file size.