Which Audio Format? MP3, WAV, M4A, FLAC
Lossy vs lossless, and practical tips when converting online.
MP3 / AAC / OGG / Opus are lossy and compact; WAV / FLAC are lossless and larger.
Phones and the web often use MP3 or M4A; editing workflows prefer WAV.
Lossy↔lossy re-encoding loses more detail — prefer a lossless or high-bitrate source.
This tool uses FFmpeg (WebAssembly) in the browser — nothing is uploaded.