WebM to PCM - Online Audio Converter

Convert WebM to PCM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert WebM to PCM

[+] Drop WebM audio here or click to select WebM

Output format

PCM (PCM 16-bit)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About WebM to PCM

Convert WebM to PCM. WebM pairs VP9 video with Opus audio and supports an alpha channel. PCM is raw pulse-code samples with no container or headers. Sample rate and width must be set by hand since headers carry none..

Why convert WebM to PCM?

Larger files than lossy shares with PCM uncompressed quality.
Keep quality where supported.
Private, no upload - runs in your browser.

WebM vs PCM

Animation	Yes	No
Transparency	Yes	No
Compression	lossy	uncompressed
Typical use	WebM pairs VP9 video with Opus audio and supports an alpha channel.	PCM is raw pulse-code samples with no container or headers.

When not to convert WebM to PCM

Skip PCM for the smallest share: lossless output stays large, so prefer a lossy target when sending WebM files.
Flatten transparency first: PCM has no alpha channel, so composite WebM over a background color.

Limits

Starting point: WebM - VP9 video with Opus audio and alpha support. Apple editors accept it unevenly; keep MP4 for editing round-trips. Sample rate and width must be set by hand since headers carry none. Encode PCM (PCM) from WebM at a bitrate near the source, and confirm the audio track before converting.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

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FAQ

How do I convert WebM to PCM?

Drop your WebM file onto this page, choose quality and codec settings, then click Convert. The result downloads as PCM instantly. All processing runs in your browser.

What codec is used for PCM?

The default codec for PCM is PCM 16-bit. You can change audio parameters in Advanced mode.

How do you store my files?

We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.