MP4 Video to MP3 Converter
Convert the soundtrack of an MP4 video to MP3 in your browser — choose the bitrate, keep it private. No upload.
🔒 Audio is decoded and edited on your device — recordings never leave your browser.
Convert the soundtrack of an MP4 video to MP3 — the one format every device, app and car stereo plays — without uploading the file anywhere.
About MP4 Video to MP3 Converter
Convert MP4 Video to MP3 in your browser. The file is decoded with the Web Audio API and re-encoded to MP3 with a pure-JavaScript LAME encoder, at the bitrate you pick (64–320 kbps). MP4 is a video container; this tool decodes just its audio track and re-encodes it as MP3, so you keep the sound and drop the video. Everything runs on your device — nothing is uploaded.
How to use MP4 Video to MP3 Converter
- 1Drop your MP4 Video file.
- 2It converts to MP3 at the default 192 kbps immediately.
- 3Optionally pick another bitrate and re-encode, then download.
Why use MP4 Video to MP3 Converter?
- ✓Extracting a song, lecture or dialogue from a video as a music file.
- ✓Pick the bitrate: 192 kbps for music, 96–128 kbps for speech, 320 kbps for archiving.
- ✓100% private — the audio never leaves your browser.
Frequently asked questions
How do I convert MP4 Video to MP3?+
Drop the file here. It is decoded in your browser and encoded to MP3 with the LAME algorithm — then you download the result. No upload, no account, no watermark.
Which bitrate should I choose?+
192 kbps is transparent for most music; 128 kbps is fine for podcasts and speech; 320 kbps is the maximum MP3 allows and best for archiving. Lower bitrates make smaller files.
Will I lose quality?+
MP3 is lossy, so some data is discarded, but at 192 kbps the difference from the MP4 Video original is inaudible for most listeners.
Is my file uploaded?+
No. Decoding and MP3 encoding run entirely on your device, so private recordings stay private.
Related Media & Files tools
PNG to JPG Converter
Convert PNG images to JPG in your browser — batch, instant and private. No upload, no watermark.
● LivePNG to WEBP Converter
Convert PNG images to WEBP in your browser — batch, instant and private. No upload, no watermark.
● LiveJPG to PNG Converter
Convert JPG images to PNG in your browser — batch, instant and private. No upload, no watermark.
● Live