AAC to WAV Converter

The AAC to WAV converter turns AAC audio (Advanced Audio Coding (often an ADTS .aac stream or inside M4A/MP4)) into WAV (Waveform Audio File Format (RIFF, usually uncompressed PCM)) directly in your browser. Editors and DAWs that cannot open raw AAC will read WAV without trouble.

AAC is the successor to MP3, used by YouTube, Apple Music and broadcast streaming; better quality than MP3 at equal bitrates. WAV is the editing and archiving standard — uncompressed, sample-accurate and supported by every audio application. Because AAC is already lossy, converting to WAV keeps the audio exactly as it sounds now but cannot restore detail that was removed when the AAC was made — expect a much larger file with the same quality.

Your file is decoded to 32-bit floating-point samples by the browser’s own audio decoder — and at the file’s own sample rate, not a resampled one. You can optionally resample or switch channels. It is then encoded to WAV on your device; for a lossy target the result is decoded again for the preview, so you hear what you will get. Typical size: about 10 MB per minute for 16-bit 44.1 kHz stereo.

Source format facts: AAC files are lossy; usual bandwidth: typically up to 20 kHz. Target facts: WAV is lossless; usual bandwidth: full bandwidth up to the Nyquist limit.