WEBM to MP3
Pull the audio track out of a WEBM file and save it as a high-quality VBR MP3 (around 190 kbps, ffmpeg quality 2). The video stream is discarded — this is the right tool when you want a podcast, lecture, music clip, or voice memo extracted from a WEBM video (the format you typically get from web recordings, YouTube downloads, or OBS captures). The conversion runs locally via ffmpeg.wasm, so your file never leaves your device. WEBM commonly contains Opus or Vorbis audio, both of which are lossy, so the resulting MP3 is a re-encode of already-lossy audio — fine for sharing, but not the best path if you need maximum fidelity.
Drop .webm file here
or click to choose
Privacy
Runs entirely in your browser — nothing is sent to any server.
Cost
Free. No sign-up, no watermark.
Supports
.webm → .mp3
Related tools
Tools that work with the same formats — most users open one of these next.
Audio Trimmer
Cut a clip from an audio file — MP3, WAV, OGG, FLAC, M4A, AAC.
WebM to MP4
Convert WebM video to MP4 (H.264 + AAC) — free online, no upload.
MP4 to MP3
Extract the audio track from an MP4 video as an MP3 file — free online.
MOV to MP3
Extract the audio track from a MOV video as an MP3 file — free online.
AVI to MP3
Extract the audio track from an AVI video as an MP3 file — free online.
MP4 to WebM
Convert MP4 video to WebM (VP9 + Opus) — free, runs entirely in your browser.
Frequently asked
Is WEBM to MP3 free to use?
Yes. WEBM to MP3 is completely free with no sign-up, no watermark, and no usage limits. Toolsly does not charge for any of its tools.
Do my files and data stay private?
Yes — WEBM to MP3 runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How does WEBM to MP3 work?
Open WEBM to MP3, drop in your WEBM file, choose any options, and click Convert. Your browser does the work locally and produces a MP3 file you can save right away.
What's the maximum file size for WEBM to MP3?
Because WEBM to MP3 runs in your browser, the maximum size depends on your device's available memory. Most modern phones and laptops handle files up to a few hundred MB without issues.