Universal input
Decoding uses the browser’s built-in audio engine, so anything your browser can play is supported.
Audio Converter
Drop an audio file and save it as WAV — the format every program opens. Optionally change the sample rate or mix down to mono. Processing is local, with no upload.
Lossless output
WAV is uncompressed — converting adds no further quality loss on top of the original.
Size control
A lower sample rate and mono cut the file size substantially when full fidelity isn’t needed.
Frequently asked questions
Is my audio file uploaded?
No. Decoding and encoding happen entirely in your browser via the Web Audio API — the file stays on your device.
Which input formats are supported?
Anything your browser can decode — typically MP3, M4A/AAC, OGG, Opus, FLAC, WAV and WebM audio.
Why is the output WAV only?
WAV is written directly by the browser with no external library. Encoding to MP3 or AAC would require an additional codec, which is deliberately not loaded.
Why is the WAV bigger than the original?
WAV is uncompressed. A 4 MB MP3 can become roughly 40 MB as WAV — that’s expected, and it means nothing is re-compressed.
Does a higher sample rate improve quality?
No. Raising the sample rate cannot restore detail that isn’t in the original — it only makes the file larger.