Convert WEBM to MP3
Extract the audio from your WEBM video files and save it as MP3, directly in your browser.
How to convert video to audio in 3 steps
Choose a WEBM video file.
Click convert to MP3.
Download your MP3 audio.
Format descriptions
WEBM — WebM is an open video container designed for the web. It uses VP8/VP9 and Opus codecs, offering small files and efficient streaming.
MP3 — MP3 is the best-known compressed audio format. It trades a little quality for much smaller files, making it perfect for music and audiobooks.
Technical comparison: WEBM vs MP3
Technical breakdown of the WEBM and MP3 specifications: compression, colour, transparency and animation support.
| Property | WebM | MP3 |
|---|---|---|
| Specification | WebM (WebM Video Container) | MP3 (MPEG-1 Audio Layer III) |
| Media type | Video | Audio |
| Compression | Hybrid (lossy or lossless) · VP8 / VP9 / AV1 + Opus | Lossy · Psychoacoustic model |
| Color space / bit depth | YUV 4:2:0 | 16-bit, 44.1 kHz |
| Transparency | Partial support | Not applicable |
| Animation | Yes (animated) | No (static) |
| Best for | WebM is an open video container designed for the web. It uses VP8/VP9 and Opus codecs, offering small files and efficient streaming. | MP3 is the best-known compressed audio format. It trades a little quality for much smaller files, making it perfect for music and audiobooks. |
What happens when converting WEBM to MP3?
The WEBM data is decoded inside your browser with WebAssembly and re-encoded to the MP3 specification, so no file is ever uploaded to a server. MP3 uses lossy compression: the file gets far lighter, but a small amount of fine detail is discarded in the process. WEBM supports animation while MP3 does not, so only the first frame is kept. Audio is re-encoded with the MP3 codec while keeping the original duration, so audio and video stay in sync.
Frequently Asked Questions
What is video to audio conversion?
Video to audio conversion extracts the sound track from a video file, for example from WEBM to MP3, keeping only the audio content.
Are my video files uploaded?
No. This tool processes video files directly in your browser. Your video files are never sent to a server.
Which video formats are supported?
This tool converts the audio of WEBM video files to MP3, all in your browser.
Is it really free and unlimited?
Yes, the tool is completely free and you can convert as many videos as you want, with no limits.
Does it work on mobile too?
Yes, it works on any modern device, including smartphones, tablets and desktop computers.
Which format will the result be in?
The converted file will always be in MP3 format, ready to download and use.
About the video to audio converter
Extract and convert the audio from your WEBM videos to MP3 for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
See also:
- Video to Audio Converters
- Compress Videos OnlineCompress MP4, WebM, AVI, MKV, MOV, MPEG, TS and 3GP videos online for free. Reduce video file size while keeping good quality. Everything happens in your browser: videos are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert WEBM to WAVExtract and convert the audio from your WEBM videos to WAV for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert WEBM to OGGExtract and convert the audio from your WEBM videos to OGG for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert WEBM to M4AExtract and convert the audio from your WEBM videos to M4A for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.