MP3, WAV, FLAC, OGG, Opus and M4A: which audio format should you choose?

Choosing an audio format is a trade-off between quality, file size, compatibility and future editing.

Format	Compression	Typical use	Main advantage
WAV	usually uncompressed	editing, interchange	simple, high-quality working file
FLAC	lossless	archive, music library	smaller without signal loss
MP3	lossy	sharing, podcasts	excellent compatibility
AAC/M4A	lossy	mobile, multimedia	efficient modern distribution
OGG/Vorbis	lossy	Web/open ecosystems	open format
Opus	lossy	speech, streaming	very efficient at moderate bitrates

WAV for working files

WAV is a common choice during editing because PCM audio avoids repeated lossy encoding. The trade-off is file size.

FLAC for lossless storage

FLAC compresses without losing the decoded signal. It is a strong choice for archives and libraries when space matters.

Converting MP3 to FLAC does not restore information already removed by MP3 encoding.

MP3 for broad compatibility

MP3 remains practical when a file must play almost everywhere. Quality depends heavily on the chosen bitrate and source complexity.

AAC, M4A, OGG and Opus

M4A is a container commonly used with AAC. OGG is often associated with Vorbis. Opus is a modern codec that performs particularly well for speech and streaming.

When a platform specifies technical requirements, check both the extension and the codec.

A healthy conversion strategy

Keep the original. Perform trimming, normalization, channel or sample-rate changes first, then encode the final distribution copy.

Use the audio converter for format conversion and read Audio compression: bitrate, format and quality before choosing aggressive compression settings.

For repeated processing, build the sequence as a Workspace audio pipeline.