WAV to MP3 Converter

★★★★½ 4.8 (234 ratings)

🔒 Client-side — Your data never leaves your browser ✅ 100% Free — No signup, no limits ⚡ Instant — No server processing

📋 How to Use

1. Upload WAV files — Click the upload area or drag WAV files to the page. Multiple files can be selected for batch conversion.
2. Set bitrate — Choose the target MP3 bitrate from 64kbps to 320kbps. Higher bitrate means better quality but larger files.
3. Convert and download — Click the convert button, wait for encoding to complete, then download the MP3 files. All processing is done locally.

The tool uses the lamejs library to encode WAV audio to MP3 format in your browser. The WAV file is first decoded to PCM audio data, then re-encoded by lamejs MP3 encoder at the specified bitrate. The entire process runs locally with no data uploaded to any server.

Bitrate determines MP3 audio quality and file size. 128kbps is standard quality; 192kbps is high quality for most music; 320kbps is maximum quality with the largest files. 64kbps is suitable for voice recordings. 192kbps is generally recommended as the balance between quality and file size.

Yes. You can select multiple WAV files for batch conversion. Each file is independently encoded with the same bitrate setting, and you can download them individually after conversion.

MP3 is a lossy compression format, so some audio data is lost during conversion. However, at 192kbps or higher, most people cannot hear the difference from the original WAV. Higher bitrate means quality closer to the original, but larger files.

This tool is specifically designed for WAV format. If your file is in another format (FLAC, OGG, AAC), please use our audio converter tool to convert it to WAV first, then use this tool to convert to MP3.