Video to MP3 / WAV — Audio Extractor
Pull the audio out of any local video file (MP4, MOV, WebM, MKV…), optionally trim it, and download as MP3 or uncompressed WAV. Runs entirely in your browser — no upload, no account.
How it works: the audio track of your file is decoded with the browser's built-in Web Audio API, the trim range is sliced out as raw PCM samples, then re-encoded to MP3 with lamejs (loaded from a public CDN) or written as a standard 16-bit WAV. Your file never leaves your device.
Looking for YouTube → MP3? We deliberately do not provide that. Browser tools cannot download from YouTube due to CORS, and offering a server-side downloader would violate YouTube's Terms of Service and EU copyright law. For your own local videos, this tool gets you a clean MP3/WAV in seconds.