Overview
WAV is uncompressed audio used in professional recording. MP3 is the most widely used lossy format for music and podcasts. FLAC is lossless compressed - smaller than WAV with no quality loss.
Understanding the difference between lossless (WAV, FLAC) and lossy (MP3) is key to choosing correctly.
Head-to-Head Comparison
Audio Quality
WAV: WAV is uncompressed - perfect bit-for-bit audio with zero quality loss.
MP3: MP3 uses lossy compression. At 320kbps most people cannot hear a difference.
Winner: WAV / FLAC (tie)
File Size
WAV: WAV is very large - a 3-minute song is approximately 30-50MB.
MP3: MP3 is very small - same song at 320kbps is approximately 7MB. 5-8x smaller than WAV.
Winner: MP3
Compatibility
WAV: WAV is supported natively on Windows, macOS, and all professional audio software.
MP3: MP3 is the most universally compatible audio format - every device and app supports it.
Winner: MP3
Metadata Tags
WAV: WAV has limited metadata support - ID3 tags are not natively standardized.
MP3: MP3 has excellent ID3 tag support - artist, album, artwork, lyrics, and more.
Winner: MP3 / FLAC
Editing
WAV: WAV is ideal for audio editing - every DAW supports it natively.
MP3: MP3 is not recommended for editing - re-encoding adds generation loss.
Winner: WAV
Convert Between WAV, MP3, and FLAC
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Convert Audio FreeFrequently Asked Questions
Can you hear the difference between MP3 and FLAC?
In blind listening tests, most people cannot reliably distinguish MP3 at 320kbps from FLAC.
Should I convert my MP3s to FLAC?
No - converting MP3 to FLAC does not restore quality. The audio data removed by MP3 cannot be recovered.
Is FLAC better than WAV?
FLAC and WAV have identical audio quality. FLAC is 50% smaller and supports metadata tags.
What bitrate should I use for MP3?
192kbps is sufficient for most listening. 256kbps is recommended for music. 320kbps is the maximum.
Which audio format does Spotify use?
Spotify streams AAC or Ogg Vorbis at up to 320kbps. Apple Music offers lossless in ALAC format.