WAV recordings from voice recorders and audio interfaces are large and awkward to share. Converting to MP3 typically cuts the size by around 90% while staying perfectly clear for speech.
This is the practical fix for a long meeting or interview recording that is too big to email or upload.
Conversion runs locally in your browser, so confidential recordings are never transmitted anywhere.
How to use it
Add your WAV recordings.
Press Convert — the audio is encoded to MP3 at a sensible bitrate.
Download files a fraction of the original size.
Supported formats and limits
Input
WAV audio
Output
MP3
Typical saving
Around 90% smaller than the WAV
Why convert
Email limits, phone storage, and players that expect MP3
Where it runs
In your browser; nothing uploaded
Not for: Master copies — MP3 is lossy, so keep the WAV if the file is a master you will edit again.
Frequently asked questions
Are my files uploaded to a server?
No. This conversion runs entirely inside your browser using your own device’s processing power. The file never leaves your computer or phone, which is why it also works when your connection drops.
How much quality is lost?
For speech, effectively none that you can hear. For music you are mixing or mastering, keep the WAV as the master and use MP3 only for sharing.
Is there a length limit?
No fixed limit — very long recordings are constrained by your device’s memory, so on a phone convert in sections if a multi-hour file stalls.