How to Convert WAV to MP3
- Choose your bitrate — Select the MP3 quality you want: 128 kbps for smaller files, 192 kbps for a good balance, 256 kbps for high quality, or 320 kbps for near-CD quality.
- Add your audio — Drag and drop a WAV file into the upload area, or click "browse files" to select one from your computer.
- Download — Click "Download MP3" to save the converted file. The conversion happens entirely in your browser.
What is a WAV File?
WAV (Waveform Audio File Format) is an uncompressed audio format developed by Microsoft and IBM in 1991. It stores raw audio data without any compression, which means it preserves the full studio-quality sound exactly as it was recorded. WAV is the standard format used in professional audio production, music studios, and sound design.
Why Convert WAV to MP3?
The main reason to convert WAV to MP3 is file size. A typical 3-minute song takes up about 30-50MB as a WAV file but only 3-5MB as an MP3 — roughly 10x smaller. WAV files are impractical for everyday use: they eat up storage space on your phone, take forever to upload or email, and many music players and portable devices handle them poorly. MP3 is the universal audio format that works on every device, every music player, every car stereo, and every streaming platform. At 192 kbps or higher, most people cannot tell the difference between a WAV and an MP3.
Which Bitrate Should I Choose?
- 128 kbps — Acceptable quality for spoken word, podcasts, and background music. Smallest file size.
- 192 kbps — Good balance of quality and size. Recommended for most music. This is the default.
- 256 kbps — High quality. Difficult to distinguish from the original in most listening environments.
- 320 kbps — Maximum MP3 quality. Virtually indistinguishable from CD audio. Largest file size.
Supported Input Format
.wav
Supports standard PCM WAV files (8-bit, 16-bit, 24-bit, 32-bit) at any sample rate. Both mono and stereo files are supported.
Frequently Asked Questions
Is this WAV to MP3 converter free?
Yes, completely free. No sign-up, no hidden fees, no watermarks. Convert as many audio files as you need.
Are my audio files uploaded to a server?
No. All processing happens locally in your browser using WebAssembly (ffmpeg.wasm). Your files never leave your device. We never see, store, or have access to your files.
How long does the conversion take?
The first time you use the tool, it downloads the converter engine (~31MB). This is cached by your browser for future visits. The actual conversion time depends on your file size and device — most audio files convert in well under a minute.
What bitrate should I choose?
192 kbps is the default and works well for most music. Choose 320 kbps if you want near-CD quality and don't mind slightly larger files. Use 128 kbps for spoken word content like podcasts or audiobooks where quality is less critical.
Will I lose audio quality?
MP3 is a lossy format, so there is technically some quality loss compared to the original WAV. However, at 192 kbps or higher, the difference is virtually undetectable to most listeners in normal listening conditions. For critical audio work, use 320 kbps.
Is there a file size limit?
There's no hard limit, but since conversion happens in your browser's memory, very large files (over 500MB) may be slow or cause issues. For best results, keep files under 500MB.
What is a WAV file?
WAV (Waveform Audio File Format) is an uncompressed audio format that stores raw sound data. It preserves perfect audio quality but creates very large files — a 3-minute song can be 30-50MB. Converting to MP3 reduces the file size by roughly 10x while keeping quality that's nearly indistinguishable to most listeners.