Compress a WAV recording
WAV to MP3
Turn a WAV you already have into a smaller MP3. The conversion runs in your browser, and the result is lossy.
Audio conversion uses FFmpeg through the single-threaded @ffmpeg/core 0.12.10 build, licensed under GPL-2.0-or-later. FFmpeg. ffmpeg.wasm.
How to convert WAV to MP3
Choose the WAV
This page accepts a WAV only. Other types belong on the main MP3 converter.
Pick a bitrate
192 kbps is the usual choice. 128 kbps saves more space for speech. 320 kbps keeps more of a clean recording.
Download the MP3
The button appears after the file has been created in this tab.
What you give up
WAV is uncompressed
A one-minute stereo WAV at CD settings is about 31.8 MB. The same minute at 192 kbps is about 4.3 MB. The MP3 is easier to email and store, and it is not identical to the WAV.
A higher bitrate is not a restoration
If the WAV was already a recording of a compressed source, 320 kbps cannot put the missing detail back.
When WAV to MP3 helps
Sharing a recording
Use it for a voice memo, a field recording, or an exported track that is too large for the place you want to send it.
Other conversions
MP3 converter
Use this when the file is not a WAV.
MP4 to MP3
Keep the audio from a video.
M4A to MP3
Convert a voice note or Apple audio file.
WAV to MP3 questions
How much smaller is the MP3?
A one-minute stereo example drops from about 31.8 MB as WAV to about 4.3 MB at 192 kbps. Your file will differ with length and bitrate.
Can I convert an MP4 here?
No. This page accepts WAV only, up to 150 MB. Use MP4 to MP3 or the main MP3 converter for other files.