Audio to PCM16 WAV

Decode supported short local audio and save a real 48 kHz PCM16 WAV with mono or stereo channel handling.

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How this works

The tool runs in this browser. Your file or text is not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

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One browser-decodable mono/stereo audio file, up to 128 MiB and 600 seconds. Decoding may use more memory than the compressed file.

    How to use Audio to PCM16 WAV

    1. Choose a supported short local audio file.
    2. Select mono averaging or stereo output.
    3. Run the decode and inspect the WAV duration, channel count and sound.

    Example: Audio to PCM16 WAV

    Average a short stereo recording into one channel.

    You add
    Source: a one-second browser-decodable stereo file. PCM16 WAV channels: Mono. A frame with left +0.5 and right -0.5 illustrates the averaging rule.
    You get
    The download is a 48,000 Hz PCM16 mono WAV. The illustrated opposite-channel frame averages to zero; actual decoded timing and samples depend on the browser.

    Options

    PCM16 WAV channels
    Mono averages stereo channels. Stereo retains a two-channel source or duplicates mono into two channels. Output sample rate is fixed at 48 kHz.

    Supported inputs and limits

    One browser-decodable WAV/MP3/Ogg/M4A/WebM audio file up to 128 MiB/600 seconds, one or two source channels, at most 256 MiB of decoded float samples. Native decode resamples to 48 kHz. No compressed-format encoding or metadata retention. Decoder expansion happens before some checks; peak memory and immediate native-decode cancellation are not guaranteed. Another decode cannot start until an unfinished cancelled decode settles.

    Where your input is processed

    This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

    Mono averaging can cancel opposite signals

    Mono is the average of left and right when the source is stereo. Sounds with opposing polarity can become quieter or cancel. Stereo output duplicates a mono source rather than creating new stereo information. Check the result by listening; a smaller channel count does not always preserve the same perceived sound.

    The browser decoder determines input support

    A filename ending in MP3, Ogg or M4A is not enough to guarantee decoding of its contained codec. Decoded samples can consume more memory than the compressed input. The supported result is 48 kHz PCM16 WAV without original metadata; this does not restore detail already lost in a compressed source.

    Questions about Audio to PCM16 WAV

    Can this create MP3 or AAC?

    No. Output is PCM16 WAV only.

    What happens to the sample rate?

    Native decoding resamples to 48 kHz.

    How are channels handled?

    Mono averages left and right. Stereo duplicates a mono input; multichannel input is refused.

    Project manager: Tony Hines · Content updated 4 October 2026 · Report a problem