WAV to MP3 Converter — Free Online Tool
Compress WAV files to small 128 kbps MP3s, privately in your browser.
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Click to select a WAV file
Output: MP3 (128 kbps)
About WAV to MP3 Converter
The WAV to MP3 Converter compresses bulky, uncompressed WAV files into compact MP3s directly in your browser. It is the fastest way to shrink raw recordings for email, messaging, websites, or portable players without installing any software.
All processing happens locally with the Web Audio API and a JavaScript MP3 encoder — your WAV file is never uploaded, keeping your audio private.
How to Use WAV to MP3 Converter
- Click the upload area and select your WAV file.
- Preview it if you like, then click Convert to MP3.
- Wait a moment while the audio is encoded at 128 kbps.
- Click Download to save your MP3 file.
Key Features
Converts WAV to 128 kbps MP3
Greatly reduces file size for easy sharing
Supports mono and stereo audio
100% client-side — files never leave your device
Free, no watermarks, and no signup
Frequently Asked Questions
How do I convert WAV to MP3?
Upload your WAV file, click Convert, and download the MP3. Everything runs locally in your browser, so the file is never uploaded.
What MP3 quality is used?
The MP3 is encoded at 128 kbps, a good balance between sound quality and a small file size that's easy to share.
Why convert WAV to MP3?
WAV files are large because they are uncompressed. Converting to MP3 dramatically reduces file size for sharing, streaming, or storing on devices.
Are my files uploaded anywhere?
No. The conversion is done in your browser with the Web Audio API, so your audio stays private on your device.