Convert WAV to MP3
Turn large WAV files into small, universally-playable MP3s — free and private.
Optimize for — sets bitrate & channels
Output settings
Selection
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Original
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Estimated output
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Saved
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Recommendation
Load an audio file to see a tailored suggestion.
Encoding…
100% private — your audio is processed locally and never uploaded to any server.
Why convert WAV to MP3?
WAV is an uncompressed format: pristine quality, but huge files — roughly 10 MB per minute of stereo audio. That is fine for editing, but impractical for sharing, emailing or putting on a website. Converting to MP3 typically shrinks the file by 90% or more while staying perfectly listenable.
This converter runs entirely in your browser with the Audio Optimizer engine — your WAV is never uploaded to a server. Pick a bitrate, optionally trim the clip or switch to mono, and download an MP3 in seconds.
For music, 192 kbps is near-transparent and 128 kbps is a great web default. For voice recordings, mono at 64–96 kbps keeps speech clear at a tiny size.
Step by step
- Drop your .wav file onto the upload area or click to browse.
- The output format is already set to MP3 — choose a bitrate (192 kbps for music, 96 kbps mono for voice).
- Optionally drag the waveform handles to trim, or switch to mono for speech.
- Check the estimated output size below the waveform.
- Click Optimize & download to save your MP3.
Tips
- A 3-minute stereo WAV (~30 MB) becomes roughly 3 MB at 128 kbps — a 90% reduction.
- Use 192 kbps when you want the MP3 to sound as close to the WAV as possible.
- For interviews, lectures and podcasts, mono halves the size with no real loss for speech.
- Keep the original WAV if you plan to edit again — MP3 is best as a final, shareable copy.
- Need a lossless smaller file instead? That is not what MP3 is for — but trimming the WAV still reduces its size.