Private media conversion
WebM to MP3 Converter
Extract the audio track from a WebM recording and save a widely playable 192 kbps MP3 without uploading it.
The engine downloads once from a CDN. Your media remains on this device.
How to use the webm to mp3 converter
- STEP 1Choose a WebM file up to 200 MB.
- STEP 2Convert it locally to MP3.
- STEP 3Download the finished MP3 file.
About this tool
MP3 output is convenient for browser recordings, downloaded WebM clips, voice messages, lectures, and interviews when only sound is needed.
The WebM video track is discarded and its audio is re-encoded to MP3.
Processing time depends on duration, source bitrate, output format, and device performance.
Frequently asked questions
Which WebM audio codecs are supported?
The included FFmpeg engine handles common WebM Opus and Vorbis audio streams. A WebM without audio cannot produce an MP3.
Is my WebM file uploaded?
No. FFmpeg WebAssembly performs the conversion in your browser. The engine downloads from a CDN, but your media stays on your device.
What is the maximum file size?
The browser converter accepts files up to 200 MB. Long files may require substantial device memory.