WAV vs MP3 vs FLAC vs OGG vs M4A: Which Audio Format Should You Choose?
There is no single best audio format. The right choice depends on what you are doing with the file: recording, editing, sharing, or storing it for the long term. This guide compares the five formats you meet most often.
The two big families
Lossless formats keep every detail of the original audio. WAV is uncompressed, while FLAC is compressed without losing anything. Lossy formats (MP3, OGG Vorbis, M4A/AAC) throw away details that are hard to hear in exchange for much smaller files.
Comparison
| Format | Type | Size | Best for |
|---|---|---|---|
| WAV | Lossless, uncompressed | Largest | Recording, editing, datasets, masters |
| FLAC | Lossless, compressed | Usually clearly smaller than WAV | Archiving with no quality loss |
| MP3 | Lossy | Small | Sharing everywhere; the most compatible format |
| OGG (Vorbis) | Lossy, open format | Small | Efficient quality; open-source projects and games |
| M4A (AAC) | Lossy | Small | Phones, streaming, good quality at low bitrates |
How to choose
- Recording and editing: WAV, so every editing step starts from full quality.
- Long-term archive: FLAC. It decodes back to exactly the same audio as the WAV, and it takes less space.
- Sending a file to anyone: MP3, because virtually every device and app plays it.
- Phone listening and voice messages: M4A is a good, efficient choice.
- Voice-data projects: usually WAV, but follow the client's specification. See preparing voice recordings.
Three mistakes to avoid
- Converting a lossy file to a lossless one to improve quality. An MP3 saved as WAV or FLAC is bigger, but the lost detail does not come back.
- Converting lossy to lossy repeatedly. Each round loses a little more.
- Deleting the original after converting. Keep the source file until you are sure you will not need it.
Convert between all of them
Sayvoi Audio Converter supports MP3, WAV, OGG (Vorbis), FLAC and M4A (AAC) as output formats. It runs in your browser, and you can convert many files at once. Open the converter.
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