M4A to WAV Offline Converter
Convert M4A audio files to WAV format completely offline in your browser
No Upload
100% Private
Free
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Loading Processing Engine
This tool uses FFmpeg.wasm. The first run downloads the engine (~25MB) — cached after.
Initializing processor...
Drop your M4A files here
or click to select
Processing: -
Working...0 / 0
Initializing...
Output Files
Why Use This Tool
Lossless WAV
WAV stores uncompressed PCM audio — ideal for editing and mastering.
Audio Editing
WAV is the standard input format for Audacity, Adobe Audition, and Pro Tools.
100% Private
Your audio never leaves your device.
Frequently Asked Questions
Why convert M4A to WAV?
WAV is uncompressed and lossless, making it the standard for audio editing, mastering, and analysis tools.
Are my files uploaded anywhere?
No. Processing is entirely client-side via FFmpeg.wasm — files never leave your browser.
How big can my files be?
Limited by your device's RAM. ~2GB on desktop, smaller on mobile. Browser memory is the constraint.