MP4 to MP3 — Free, Online, No Upload
MP4 to MP3 is the most common audio extraction task. This converter pulls the audio track from any MP4 in seconds — no upload, no quality loss when the source codec already supports it.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Why use this MP4 to MP3?
- Stream-copy when the audio is already MP3 (lossless, instant).
- Re-encode to 192 kbps MP3 when the source is AAC / Opus / Vorbis (still transparent).
- No upload, no signup, no watermark.
- Works on any MP4 — phone exports, screen recordings, downloads.
How to use it
Drop the MP4 into the extractor
Any MP4 works. Long files (1+ hour) take longer because they're processed sequentially.
Pick MP3 192 kbps as output
Default settings work for music and voice alike.
Download the MP3
Output works in every music player, podcast app, and voicemail system.
FAQ
Will quality drop converting AAC → MP3?
Slightly, because both are lossy formats. At 192 kbps MP3, the loss is inaudible for music; for voice, 128 kbps is enough and even smaller.
Can I extract a specific time range?
Yes — use the Video Trimmer first to cut the MP4 to the desired range, then drop the trimmed clip into this extractor.
Does this run in my browser?
Yes — the tool uses FFmpeg compiled to WebAssembly. Your file never uploads to a server, never leaves your device, and there is no signup or watermark.