WAV to MP3 Converter
Shrink WAV recordings to MP3 in your browser. No uploads, batch ready.
Drop files here
or click to browse · paste from clipboard
Accepts .WAV · Up to 1,000 files
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Choose settings
Adjust quality, format, and other options to match your needs.
Click Convert
Everything runs in your browser via WebAssembly. WAV to MP3 Converter happens locally — no server involved.
Download
Download files individually or grab all at once as a ZIP.
Frequently asked questions
WAV is an uncompressed audio format — every sample is stored exactly as recorded. That makes WAV files huge: a 3-minute song at CD quality is about 30 MB as WAV. MP3 compresses the same audio to roughly 3–4 MB by removing frequencies the ear typically cannot hear. Convert to MP3 when you need to share files, upload to a platform, or fit audio on a device with limited storage.
Approximately 10× smaller at 128 kbps. A 30 MB WAV file becomes roughly 3 MB as a 128 kbps MP3. At 320 kbps the MP3 is about 4× smaller than WAV. The exact ratio depends on the length and the bitrate you choose.
WAV is lossless — converting to MP3 introduces compression artifacts. At 128 kbps, the difference is inaudible for most listeners on most speakers and headphones. At 192–256 kbps, even careful listeners rarely hear a difference. Use 320 kbps if you plan to edit the MP3 after converting. Keep the original WAV if you need lossless quality long-term.
For podcasts and speech: 128 kbps is transparent and keeps file sizes small. For music: 192 kbps is a good default; 256 kbps is preferred by audiophiles. For archiving: keep your WAV file — MP3 is lossy. If you must archive as MP3, use 320 kbps.
Yes. Drop as many WAV files as you need. ConvertYard processes them one at a time in your browser and packages all the MP3s into a single ZIP for download. There is no hard file count limit, though very large batches will take proportionally longer.
Never. Conversion runs entirely in your browser using ffmpeg.wasm — a full media processing engine compiled to WebAssembly. Your files never leave your device. ConvertYard's servers only deliver the tool code — they never see your files.