Convert WAV to M4A
From an uncompressed master to the compressed format Apple software and video editors prefer.
Audio only · up to 10 files · 100 MB each — those numbers protect your memory, not our server
Getting the converter ready — this happens once, then your browser keeps it.
The converter could not start.
The engine files are missing from — copy ffmpeg-core.js and ffmpeg-core.wasm there.
Almost always a mismatched build: the worker is an ES module, so the core has to be the esm one too. Copy ffmpeg-core.js and .wasm from @ffmpeg/core/dist/esm/, not dist/umd/.
not in this build of the converter, so it is not offered.
What you lose
A first compression, permanent. AAC handles it better than MP3 does at the same bitrate.
What you do not gain
A much smaller file that drops straight into a video timeline. Keep the WAV if it is a master.
What it does to the size
Approximate, for stereo audio at the settings this tool uses by default. The real figure moves with the material — silence and speech compress far better than a full mix.
When this is the right conversion
Delivering audio for video, or for an Apple workflow, from a recording you made yourself.
Other conversions
This tool is free because dbelo is a library of sound effects, and we would rather you found us this way than not at all.
Browse the sound library