Audio Converter Online Free — MP3, WAV, OGG, WEBM Batch Convert
Convert MP3, WAV, OGG, WEBM — Batch up to 5 files — 100% browser-side
Convert audio files between formats directly in your browser. Supports MP3, WAV, OGG, and WebM. Batch convert up to 5 files at once with quality selector. No upload, no registration — your files stay private.
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MP3, WAV, OGG, WEBM — Up to 5 files at once
How to Convert Audio Files Online
Upload up to 5 audio files, choose your output format (WAV, OGG, or WEBM), set quality, and click Convert. The Web Audio API decodes and re-encodes each file entirely in your browser — no upload needed.
Frequently Asked Questions
What formats are supported?
Input: MP3, WAV, OGG, WEBM, FLAC (if browser supports). Output: WAV (lossless), OGG, WEBM via MediaRecorder API.
Can I convert MP3 to WAV?
Yes. Select MP3 input, choose WAV output format, and click Convert. The Web Audio API decodes the MP3 and exports as lossless WAV.
Can I convert multiple files at once?
Yes. Upload up to 5 audio files and they will all be converted in sequence. Download each individually or all at once.
Does conversion affect quality?
Converting to WAV is lossless. Converting to OGG or WEBM uses lossy compression — you can select quality level (low/medium/high).
Why can't I convert to MP3?
Browsers cannot encode MP3 natively due to patent licensing. WAV, OGG, and WEBM are the available output formats via the MediaRecorder API.