Convert WAV to AAC Online

"Online converter" normally means uploading your file to someone's server, waiting in a queue, and downloading the result. This page inverts that: it loads FFmpeg compiled to WebAssembly into your browser and does the work on your own machine. You keep the convenience of online — nothing to install, works on any OS — without the upload.

Storage-wise you're looking at about 8× less: 10 MB per minute becomes roughly 1.2. That matters here, because transfer is where server-based converters spend most of their time. With no upload and no download of the result, what's left is just the conversion itself: usually a second or two.

WAV files typically come from recording sessions, DAW bounces, and anything captured uncompressed — and WAV is uncompressed, so files are enormous — an hour of audio runs past 600 MB. Single clean encode from a full-quality source — the best-case scenario for a lossy format, with no inherited artifacts.

Because it's a web page rather than software, the same converter runs on Windows, macOS, Linux, ChromeOS, iPhone, and Android — with nothing to keep updated and none of the bundled adware that comes with downloadable free converters.

WAV is the format of recording sessions. It plays where it was made, but WAV is uncompressed, so files are enormous — an hour of audio runs past 600 MB. AAC is the destination because it plays essentially everywhere — HLS streaming segments and every ordinary phone, browser, and player. Storage-wise you're looking at about 8× less: 10 MB per minute becomes roughly 1.2. Because WAV is uncompressed, encoding to AAC here is the clean, single-generation case — the encoder sees the whole original signal, so this AAC is as good as the format gets.