Audio to WAV Converter

ConvertersPremium

Convert MP3, M4A, OGG, FLAC or AAC audio to uncompressed 16-bit WAV.

Nothing Is UploadedRuns In This Browser TabNo Account Needed

How It Works

1

Upload / Input

Select your files or paste your content to get started.

2

Process

The work happens in this browser tab. Your file never leaves your device, so nothing is queued, stored or transmitted.

3

Download / Result

Get your results instantly. Download files or copy output in one click.

Features

Reads MP3, M4A/AAC, OGG, Opus, FLAC and WAV
Exports uncompressed 16-bit PCM WAV
Resample to 48, 44.1, 22.05, 16 or 8 kHz
Downmix to mono, or keep the original channels
Decoded and encoded in your browser with the Web Audio API

How to use Audio to WAV Converter

  1. Add your audio file

    Drop in anything your browser can play — MP3, M4A, AAC, OGG, Opus, FLAC or WAV.

  2. Choose the sample rate

    Leave it as decoded unless something downstream wants a specific rate. 16 kHz is the usual choice for speech going into a transcription tool; 8 kHz is telephone quality.

  3. Choose the channels

    Mono halves the file and is right for voice. Keep stereo for music.

  4. Convert and download

    Play the preview before saving. The output is a 16-bit PCM WAV.

When to use Audio to WAV Converter

  • Getting a WAV out of a voice memo for software that refuses compressed audio
  • Preparing speech for a transcription or speech-recognition tool that wants 16 kHz mono WAV
  • Turning an M4A recording into the uncompressed format an audio editor expects
  • Producing a lossless working copy before editing, so the edit is not a second lossy pass

FAQ

WAV, and only WAV. A browser can decode MP3, AAC, OGG and FLAC but cannot encode any of them — that needs a codec such as ffmpeg.wasm, around 25 MB of download. Rather than ship that, this tool does the part the platform genuinely supports and says so.
Anything your browser can play: MP3, M4A and AAC, OGG Vorbis and Opus, FLAC, and WAV. Formats the browser has no decoder for — some WMA and AC-3 files, for instance — are rejected with a message rather than converted badly.
Because WAV is uncompressed: roughly 10 MB per minute of 44.1 kHz stereo, against about 1.4 MB for the same minute as a 192 kbps MP3. Nothing has been added — the compression has been undone. Dropping to mono halves it, and a lower sample rate reduces it further.
No. Those need encoders that browsers do not include, and adding one means a roughly 25 MB WebAssembly download before anything can be converted. The tool exports WAV and says so on the page rather than renaming your file and hoping.
No. WAV is lossless, so nothing further is lost — but nothing is recovered either. A 96 kbps MP3 converted to WAV sounds exactly like a 96 kbps MP3, in a file many times the size.
Because the browser has no decoder for it. WMA and AC-3 are the usual cases, and some MP4 files carry an audio codec the browser will not touch. Nothing is converted badly in that situation; you get a message instead.
No. Decoding and encoding both happen in your browser through the Web Audio API, so the file never leaves your device.

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About Audio to WAV Converter

This tool converts to WAV, and to nothing else. That is a limit of the platform rather than a choice about scope: browsers ship audio DECODERS for MP3, AAC, OGG and FLAC, which is how they play the web, but they ship no ENCODERS for any of them. The only audio a browser can write on its own is raw PCM samples with a RIFF/WAVE header — a WAV file.

Producing an MP3 in a browser means shipping a codec, in practice ffmpeg.wasm at around 25 MB. Downloading that before a single second of audio can be encoded is a poor trade for a tool this size, so the honest version of the tool is the one that does what the Web Audio API genuinely does. If you need MP3 or AAC, a desktop tool will do it faster and better.

What is here is real work rather than a rename. The file is decoded to samples, optionally resampled and downmixed through an offline audio graph, and written out as 16-bit PCM. Expect the result to be much larger than the input: roughly 10 MB per minute of 44.1 kHz stereo, against about 1.4 MB for the same minute at 192 kbps. That is what removing the compression costs, and it is why WAV is a working format rather than a delivery one.

Tips and limits

  • WAV is uncompressed — roughly 10 MB per minute of stereo at 44.1 kHz. Check you have the space.
  • Mono halves the size and loses nothing for a single voice.
  • 16 kHz mono is what most speech-recognition tools ask for.
  • Converting an MP3 to WAV does not restore quality. The audio the encoder discarded is gone; you get a bigger file holding the same sound.
  • Resampling to a higher rate adds no detail either. The browser decodes at its own output rate — usually 48 kHz — so even "as decoded" may not be the file’s original rate; set one explicitly when it matters.
  • Need MP3 or FLAC? Use a desktop converter. No browser can encode them without a large codec download.