Why convert WAV to M4A?
WAV is uncompressed studio quality, ideal for editing and mastering. Converting it to M4A gets you Apple's AAC container, the default for iPhone voice memos and iTunes, so it plays and shares everywhere without hassle.
This converter runs the same FFmpeg engine desktop tools use, compiled to WebAssembly and executed entirely in your browser. Your WAVnever 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 WAV to M4A for free?
Drop your WAV file into the tool above (or click to browse), then hit Export. The output is already set to M4A. It converts instantly in your browser and downloads — no signup, no watermark.
Is my WAV file uploaded to a server?
No. The conversion runs entirely in your browser using WebAssembly (FFmpeg). Your WAV file never leaves your device, which is why it works offline and stays private.
Will converting WAV to M4A lose quality?
M4A is a compressed format, so there's a small, usually inaudible quality trade for a much smaller file. Use the Advanced options above to pick a high bitrate (e.g. 320 kbps) if you want maximum fidelity.
Can I trim or fade the audio while converting WAV to M4A?
Yes — drag the waveform handles to trim, add fade-in/out, adjust volume or bitrate, then export. You can also drop several WAV files to batch-convert or merge them into one M4A file.