MP3 to WAV Converter
Convert MP3 audio files to WAV format online for free. WAV is uncompressed and lossless.
About this tool
Convert MP3 audio files to WAV format online for free. WAV is uncompressed and lossless. This tool runs entirely in your browser — no file upload, no account required, and no data is ever sent to a server. Audio processing is powered by FFmpeg compiled to WebAssembly — the same professional-grade encoder used in desktop applications.
- ✅ Free to use, no sign-up required
- ✅ Files never leave your device
- ✅ Powered by WebAssembly — no plugins needed
- ✅ Works on any browser and device
How it works
FFmpeg (compiled to WebAssembly) is loaded into a background thread in your browser. Your audio file is passed to FFmpeg along with the target format options. FFmpeg decodes and re-encodes the audio and returns the output file for download.
Frequently Asked Questions
Is MP3 to WAV Converter free to use?
Yes, MP3 to WAV Converter is completely free. There are no usage limits, no sign-up required, and no hidden fees.
Are my files safe when using this tool?
Completely. All processing happens locally in your browser using JavaScript and WebAssembly. Your files are never uploaded to any server and never leave your device.
Does MP3 to WAV Converter work on mobile?
Yes, MP3 to WAV Converter works in any modern browser including mobile browsers on iOS and Android — no app installation required.
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