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ADPCM to PCM - Online Audio Converter
Convert ADPCM to PCM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert ADPCM to PCM
Drop ADPCM audio here or click to select
ADPCM, WAV
PCM (PCM 16-bit)
About ADPCM to PCM
Convert ADPCM to PCM. ADPCM predicts samples to quarter voice-band bitrates. 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 ADPCM to PCM?
- Larger files than lossy shares with PCM uncompressed quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
ADPCM vs PCM
| Codec | ADPCM | PCM 16-bit |
|---|---|---|
| Compression | lossy | uncompressed |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | ADPCM predicts samples to quarter voice-band bitrates. | PCM is raw pulse-code samples with no container or headers. |
When not to convert ADPCM to PCM
- Skip PCM for the smallest share: lossless output stays large, so prefer a lossy target when sending ADPCM files.
- Keep a master copy: repeated exports stack small losses, so archive ADPCM before batch PCM shares.
Limits
Starting point: ADPCM - ADPCM predicts samples to quarter voice-band bitrates. Variants differ by vendor, so confirm the flavor before converting. Sample rate and width must be set by hand since headers carry none. Encode PCM (PCM 16-bit) from ADPCM at 256k for music or 128k for speech, starting from the master.
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 ADPCM to PCM?
Drop your ADPCM 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.