Convert WEBM to MP3

Convert WEBM video to MP3 directly in your browser, without uploading anything. Free, fast and without an account.

Your file never leaves your device.

How to convert WEBM to MP3

MP3 plays on every phone, car stereo, speaker and media player, which makes it the safest format for sharing audio. This tool decodes the WEBM with your browser's audio engine and encodes MP3 locally with the LAME MP3 encoder compiled for the web, so the file never leaves your device. It is the easiest way to keep the music, a talk or a voice track from a video.

Step 1: Choose your WEBM file
Drag and drop a .webm file onto the converter or click to browse. It works on desktop, tablet and phone.
Step 2: Choose the quality
The audio is decoded and re-encoded on your device.
Step 3: Download the MP3
Save each result individually, or download everything as a single ZIP when you convert several files.

Good to know

Only the soundtrack is extracted; the video stream is discarded, so the result is much smaller than the original.
The default 192 kbps is transparent for most listeners; choose 320 kbps for music archiving or 128 kbps for speech and podcasts.
Decoding uses your browser's built-in codecs. Chrome and Edge support the widest range of formats.

Why use this WEBM to MP3 converter?

MP3 plays on every phone, car stereo, speaker and media player, which makes it the safest format for sharing audio.
Keeps the original sample rate and stereo channels.
No watermark, no length limit within the file size cap.
Your recording never leaves your device.

Is it free?

Yes. Converting WEBM to MP3 is free, with no watermark, signup or email required. Local conversions have no artificial file-size or daily cap; the practical limit is your device.

Is my file uploaded?

The WEBM file is processed entirely in your browser. It is never uploaded, never stored and never seen by anyone, so this is safe for confidential files.

About the formats

What is WEBM?

WebM is an open, royalty-free media format launched by Google in 2010 and based on the Matroska container. It carries VP8, VP9 or AV1 video with Vorbis or Opus audio, all free of licensing fees. Chrome, Firefox, Edge and other modern browsers play it natively, and it supports transparency with VP8 and VP9.

Use WebM for videos embedded on websites, screen recordings and animations with transparent backgrounds. For sharing with people who will open the file on phones, TVs or editing software, MP4 is more widely supported.

WebM (Web Media)

What is MP3?

MP3 (MPEG-1 Audio Layer III) is a lossy audio format developed largely at the Fraunhofer Institute and standardised by MPEG in the early 1990s. It removes sounds that human hearing is unlikely to notice, shrinking files dramatically. Quality depends on the bitrate: higher bitrates sound closer to the original. Its patents have expired and virtually every player, car stereo and browser supports it.

Use MP3 when compatibility is the priority: podcasts, music for older devices, audio for websites or files you send to anyone. For archiving or editing, keep a lossless original such as WAV or FLAC, because each lossy re-encode adds artefacts.

MP3 (MPEG-1 Audio Layer III)

Frequently Asked Questions

Is WEBM to MP3 conversion free?

Yes. It is free, with no watermark, signup or email required. Local conversions have no artificial file-size or daily cap; the practical limit is your device.

Will the MP3 sound the same as the WEBM?

At the default bitrate the difference is inaudible for most people. Choose a higher bitrate if you plan to edit or archive the audio.

Are tags such as title and artist kept?

Metadata tags are not copied by the in-browser encoder; add them afterwards in your music player if needed.

Is it safe to convert webm to mp3 here?

Yes. The work happens on your own device with WebAssembly and browser APIs, so the file is not uploaded at all. You can even disconnect from the internet once the page has loaded.

Do I need to install anything?

No. Everything runs in a modern browser (Chrome, Edge, Firefox or Safari) on Windows, macOS, Linux, Android and iOS. There is no app, plugin or account.

AudioProcessed locally