Loading the interactive tool… It runs in your browser — if it doesn't appear, enable JavaScript.
WAV files are uncompressed — a 3-minute recording runs ~30 MB, too big to email and wasteful to store. Converting to MP3 at 192–320 kbps cuts that ~10× with little to no audible difference. Drop in the WAV, pick a bitrate, done — locally, via FFmpeg in WebAssembly.
Frequently asked questions
Will MP3 audibly degrade my WAV?
At 320 kbps, almost nobody can tell in blind tests. Keep the WAV as your master if it's an original recording; use the MP3 for sharing and everyday listening.
Why is my WAV so huge in the first place?
WAV stores raw samples — CD quality runs ~10 MB per minute. It's the right format during recording and editing, and the wrong one for distribution.