Why not convert in the browser?

Browsers can decode MP3 and WAV reliably but cannot encode FLAC, Opus, or M4A without a large Wasm bundle. Server-side ffmpeg is faster and smaller.

What is the best lossless format?

FLAC for archival — half the size of WAV with identical audio. ALAC (M4A) for Apple ecosystems.

Generally yes, especially below 96 kbps. Support is excellent on web and modern devices.

Format ConverterServer

Convert audio files to any format — MP3, WAV, FLAC, OGG, AAC, M4A, or Opus.

Drop an audio file here

or click to browse — any audio format accepted

⎆Processed on our servers. Files are deleted immediately after processing.

How to use Format Converter

Drop a file
Any common audio format works — MP3, WAV, FLAC, OGG, AAC, M4A, Opus.
Pick a target format
Choose from MP3, WAV, FLAC, OGG, AAC, M4A, or Opus.
Submit
The file uploads and ffmpeg transcodes it server-side.
Download
Save the converted file with the correct extension and MIME type.

Frequently asked questions

Why not convert in the browser?: Browsers can decode MP3 and WAV reliably but cannot encode FLAC, Opus, or M4A without a large Wasm bundle. Server-side ffmpeg is faster and smaller.
What is the best lossless format?: FLAC for archival — half the size of WAV with identical audio. ALAC (M4A) for Apple ecosystems.
Does Opus sound better than MP3?: Generally yes, especially below 96 kbps. Support is excellent on web and modern devices.