Free Online Audio Converter
Convert audio between MP3, WAV, OGG, M4A, FLAC, AAC and WEBM — free, instant, and 100% private. Nothing is uploaded.
- Free
- No sign-up
- Stays on your device
Why use this tool
7 Formats Supported
Convert between MP3, WAV, OGG, M4A, FLAC, AAC, and WEBM.
100% Private
FFmpeg runs in your browser — files are never uploaded.
FFmpeg-Powered
Industry-standard FFmpeg engine compiled to WebAssembly for browser use.
No File Uploads
Your audio never leaves your device. Zero privacy risk.
Instant Download
Converted file downloads immediately after processing.
Works Everywhere
Windows, Mac, Linux, iOS, Android — any modern browser.
Frequently asked questions
Yes — 100% free, unlimited conversions, no account required.
MP3, WAV, OGG, M4A (AAC), FLAC, AAC, and WEBM — any combination.
No. This tool uses FFmpeg compiled to WebAssembly (Wasm), which runs entirely in your browser. Your files stay on your device.
The first conversion loads the FFmpeg.wasm engine (~25 MB). Subsequent conversions in the same session are instant.
No hard limit — but very large files (>500 MB) may be slow depending on your device RAM.
MP3: universal compatibility. WAV: maximum quality for editing. FLAC: lossless with smaller size than WAV. M4A: best quality-to-size ratio for Apple devices. OGG: best for web and open-source.
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