Why convert M4A to WAV?
M4A is Apple's AAC container, the default for iPhone voice memos and iTunes. Converting it to WAV gives you a lossless, edit-ready file — uncompressed studio quality, ideal for editing and mastering.
This converter runs the same FFmpeg engine desktop tools use, compiled to WebAssembly and executed entirely in your browser. Your M4Anever touches a server — which is why it's private, works on slow connections, and has no queue. You can also trim, fade, merge and batch-convert in the same step.
Frequently Asked Questions
How do I convert M4A to WAV for free?
Drop your M4A file into the tool above (or click to browse), then hit Export. The output is already set to WAV. It converts instantly in your browser and downloads — no signup, no watermark.
Is my M4A file uploaded to a server?
No. The conversion runs entirely in your browser using WebAssembly (FFmpeg). Your M4A file never leaves your device, which is why it works offline and stays private.
Will converting M4A to WAV lose quality?
Converting to WAV is lossless, so no quality is lost in the container change. Note that if the source M4A was already lossy, WAV preserves that quality but can't add back detail the original never had.
Can I trim or fade the audio while converting M4A to WAV?
Yes — drag the waveform handles to trim, add fade-in/out, adjust volume or bitrate, then export. You can also drop several M4A files to batch-convert or merge them into one WAV file.