Steven Frady

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Extract MP3 Audio from WebM

Free online audio converter. Pull the audio out of WebM video as MP3 right in your browser. Files are never uploaded anywhere.

Choose an audio or video file, or drop it here
Output
Other conversions
MP3 → WAVMP3 → AIFFMP3 → FLACMP3 → OGGMP3 → M4AMP3 → OpusWAV → MP3WAV → AIFFWAV → FLACWAV → OGGWAV → M4AWAV → OpusAIFF → MP3AIFF → WAVAIFF → FLACAIFF → OGGAIFF → M4AAIFF → OpusFLAC → MP3FLAC → WAVFLAC → AIFFFLAC → OGGFLAC → M4AFLAC → OpusOGG → MP3OGG → WAVOGG → AIFFOGG → FLACOGG → M4AOGG → OpusM4A → MP3M4A → WAVM4A → AIFFM4A → FLACM4A → OGGM4A → OpusOpus → MP3Opus → WAVOpus → AIFFOpus → FLACOpus → OGGOpus → M4AMP4 → MP3MP4 → WAVMP4 → AIFFMP4 → FLACMP4 → OGGMP4 → M4AMP4 → OpusMOV → MP3MOV → WAVMOV → AIFFMOV → FLACMOV → OGGMOV → M4AMOV → OpusWebM → WAVWebM → AIFFWebM → FLACWebM → OGGWebM → M4AWebM → OpusMKV → MP3MKV → WAVMKV → AIFFMKV → FLACMKV → OGGMKV → M4AMKV → Opus

About WebM and MP3

WebM is the open web video container used by browser screen recorders and much of YouTube. Its audio track is typically Opus or Vorbis.

MP3 is the most widely supported audio format there is — every browser, player, car stereo, and podcast app reads it. It's lossy, so quality is traded for file size, but at 192 kbps and up most listeners can't tell.

Extracting audio from WebM re-encodes only the audio track — the video is discarded, so even long files finish quickly.

How the conversion works

This tool runs FFmpeg — the same engine behind most media software — compiled to WebAssembly, entirely in your browser. Your file is read locally, converted locally, and saved straight from memory; nothing is ever uploaded, which also means no queues and no server-side file size limits.

The converter itself is a one-time ~31 MB download on your first conversion, cached by the browser afterwards. Once it's loaded, everything works offline.

A free tool by Steven Frady, a creative developer building apps, shaders, and interactive installations. See the work.