Convert WAV to M4A
Compress WAV recordings to M4A (AAC) — better sound per megabyte than MP3, native to Apple devices.
Free workspace
Keep repeat file work in motion after the first export.
Start here without an account, then move into retained files, OCR, and starter workflows when the task stops being a one-off.
Instant use
25 browser conversions / day
Retained files
7-day retained files
Secure processing
10 server jobs / month
Document tools
20 OCR pages / month
Conversion surface
Run the file task now.
The converter stays fast and simple. Workspace features only step in when retention, OCR, or repeat work actually adds value.
How it works
A short path from input to finished export.
The flow stays simple so you can get in, finish the job, and move on without extra setup.
Upload WAV Files
Drag and drop your WAV files or click to browse. You can queue several at once.
Convert in Your Browser
The first run fetches the conversion engine (a one-time ~31MB download); after that, WAV to M4A conversion happens entirely on your device — nothing is uploaded.
Download M4A
Save the converted file right away. Multiple files are bundled into a ZIP for one-click download.
Why FileMorf
A cleaner route for this conversion.
The tool keeps the core job lightweight while still giving you room to grow into retained, higher-value workflows later.
100% Private
All processing happens in your browser. Your files never leave your device.
Efficient AAC Encoding
M4A uses the AAC codec, which delivers better sound than MP3 at the same bitrate — the native format of the Apple ecosystem.
One-Time Engine Download
The first conversion fetches a ~31MB audio engine; your browser caches it, and everything runs locally from then on.
Details
Answers before you start.
The important questions, plus the nearby routes users usually need next.
When a WAV needs to shrink, M4A is the technically better pick over MP3: AAC delivers cleaner sound at the same bitrate, and every modern phone and browser plays it. It's the natural delivery format for sending recordings to iPhone users, importing into Apple apps, or building audiobook and podcast files. Keep the WAV master; the M4A is the copy that travels.
Yes, by definition — M4A is a lossy format, and discarding detail the ear rarely misses is exactly where the size savings come from. At the High setting the difference is inaudible to most listeners on most equipment. Keep the WAV original as your master copy and convert delivery copies from it.
High encodes AAC at 256 kbps, Standard at 160 kbps, and Small at 96 kbps. AAC is more efficient than MP3, so each level sounds roughly like an MP3 one step higher in bitrate.
No. The entire WAV to M4A conversion runs locally in your browser. The only thing fetched is the conversion engine itself — a one-time ~31MB download that your browser caches. Your files never leave your device, and there is nothing for anyone else to store.
The first run downloads the audio engine — FFmpeg compiled to WebAssembly, about 31MB. Your browser caches it, so later conversions start immediately, whether you're converting one file or a whole batch.
Related routes
Keep moving through adjacent file work.
These are the next conversion paths people usually need after this one.
Next step
Convert now. Create a workspace when the job starts repeating.
Keep quick work frictionless, then move into retained files, document tools, and secure processing when that actually improves the workflow.