Lossless Audio Converter
Convert Any Audio to Uncompressed WAV
Need to use Lossless Audio Converter right now?
Doesn't restore quality lost during a prior lossy encode — it simply avoids introducing further loss.
Drop an audio file, or click to browse
Processed locally in your browser — never uploaded
Decodes to uncompressed 16-bit PCM WAV — lossless, but noticeably larger than the source format since nothing is compressed.
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About Lossless Audio Converter
WAV stores audio completely uncompressed — every sample exactly as decoded, with no lossy encoding applied at all. This makes it the format of choice whenever a downstream tool (an audio editor, a voice analysis pipeline, certain professional software) specifically expects lossless input rather than a compressed format like MP3. This tool converts any audio file your browser's FFmpeg build can decode into WAV.
A real FFmpeg build compiled to WebAssembly handles the decoding and re-encoding entirely inside your browser, outputting standard 16-bit PCM audio — the most broadly compatible WAV variant, readable by essentially any software that accepts WAV files at all.
The trade-off for WAV's lossless guarantee is file size: since nothing is compressed, a WAV file is typically many times larger than an equivalent MP3 or OGG file of the same audio — this is expected and inherent to the format, not something a conversion setting can avoid.
Converting a file that started as a lossy format (MP3, AAC) to WAV doesn't add back any quality that was already lost during the original lossy encoding — WAV simply avoids introducing further loss beyond that point, rather than reversing prior compression.
How it works
- Upload your audio file. Any format your browser's FFmpeg build can decode.
- Conversion runs locally. Audio is decoded and re-encoded as uncompressed WAV.
- Download the WAV. Lossless 16-bit PCM audio, ready for further processing.
Examples
Preparing audio for an editing tool
Input
compressed audio file
Output
an uncompressed WAV file ready for lossless editing