MP3 to WAV
Convert MP3 to WAV online for free. Get uncompressed audio quality from your MP3 files instantly. No software installation required.
Download Converted Audio
No Audio Files Yet
Upload and convert audio files to see them appear here for download.
Convert MP3 audio files to lossless WAV format entirely in your browser using WebAssembly. No file uploads, no servers — your audio never leaves your device. Get CD-quality 44.1 kHz 16-bit WAV output in seconds.
MP3 to WAV Converter for Lossless Audio Production
WAV (Waveform Audio File Format) is the gold standard for uncompressed audio, preferred by audio engineers, DAW software, and speech recognition APIs that reject lossy MP3 input. Our browser-based MP3 to WAV converter uses FFmpeg compiled to WebAssembly, running entirely client-side so your audio files stay private.
Converting MP3 to WAV produces a PCM-encoded file at 44.1 kHz and 16-bit depth — the same specification used for audio CDs. This makes the output immediately importable into professional tools like Audacity, Adobe Audition, Logic Pro, and FL Studio without any re-encoding artifacts.
Speech recognition services such as Google Speech-to-Text and AWS Transcribe often require uncompressed WAV input for maximum transcription accuracy. Whether you're preparing samples for a DAW, feeding audio into an ML pipeline, or archiving recordings in a lossless format, this tool delivers clean WAV files with no quality loss beyond what the original MP3 compression already introduced.
100% Browser-Based With FFmpeg WebAssembly
Unlike cloud-based converters, this tool processes audio entirely inside your browser using FFmpeg compiled to WebAssembly (WASM). There are no file size limits imposed by server bandwidth, no account sign-ups, and no privacy risk — your MP3 files are processed in memory and never transmitted over the network. The WASM runtime is loaded once and cached locally, enabling fast offline conversions on subsequent visits.
DAW Import and Audio Production
Import converted WAV files directly into Audacity, Logic Pro, FL Studio, or Ableton Live for non-destructive editing without introducing additional compression artifacts.
Speech Recognition API Preparation
Many speech-to-text APIs — including Google Cloud Speech-to-Text and AWS Transcribe — achieve higher accuracy with uncompressed PCM WAV input rather than lossy MP3.
Archiving and Lossless Backup
Convert important MP3 recordings to WAV for long-term archiving, ensuring the file remains playable without codec dependencies decades from now.
- 1
Select Your MP3 File
Click the upload area or drag and drop your MP3 file into the converter. The file is loaded into browser memory — nothing is sent to any server. Large files up to several hundred MB are supported depending on your device RAM.
- 2
Configure Output Options
Choose the desired sample rate (default 44.1 kHz) and bit depth (default 16-bit PCM). These settings match CD audio quality and are compatible with virtually all DAWs and audio APIs.
- 3
Convert and Download
Click Convert. FFmpeg WASM processes the audio in your browser. When complete, a download link appears for your WAV file. The output filename mirrors the original MP3 filename with a .wav extension.
Lossless WAV PCM Output
Produces standard PCM WAV files at 44.1 kHz / 16-bit depth, compatible with every major DAW, audio editor, and speech recognition platform.
100% Privacy — No Uploads
All conversion runs in WebAssembly inside your browser tab. Your audio files are never sent to any server or third-party service.
FFmpeg WebAssembly Engine
Powered by the same FFmpeg used in professional media workflows, compiled to WASM for reliable, cross-platform browser execution without plugins.
Instant Download
Download the converted WAV file immediately after processing with a single click, preserving the original filename for easy project management.
Found this tool useful?
Share your experience and help others discover it.