Audio Format Converter
Convert audio files between formats. FLAC to MP3, WAV to AAC, and more. All processing in your browser.
Frequently Asked Questions
- What formats can I convert between?
- You can convert between MP3, WAV, FLAC, AAC (M4A), OGG Vorbis, and Opus. All conversion happens in your browser using ffmpeg.wasm.
- Is there a file size limit?
- Browser memory and ffmpeg.wasm impose real limits. TrueRes estimates the working set before processing, warns on high-risk jobs, and asks before attempting especially memory-heavy work on phones and tablets. The upstream WebAssembly input ceiling is 2 GB, but practical limits are usually lower.
Selected files are processed locally in the browser and are not uploaded to TrueRes for processing. Open this page in a modern browser to use the interactive tool.