Which audio format should you choose?
MP3 is the safe default: every phone, browser, car stereo and media player made in the last twenty years can play it, and it compresses speech and music to a fraction of the original size. Choose it when the file has to simply work everywhere.
WAV is uncompressed. Nothing is discarded, which makes it the right format for audio you are still editing, for source material you will re-encode later, and for tools that require raw PCM input. The cost is size: roughly ten megabytes a minute in CD quality.
OGG (Vorbis) reaches better quality than MP3 at the same bitrate and is unencumbered by patents, which is why it is common in games and open-source software. AAC does much the same job at similar quality and is the default across the Apple ecosystem and most streaming platforms.
Converting does not add quality back
MP3, OGG and AAC are lossy: encoding discards detail that cannot be recovered. Converting a 128 kbps MP3 to WAV produces a much larger file that sounds exactly like the 128 kbps MP3, because the discarded detail is already gone.
The practical rule is to convert from the best source you have, and to avoid repeatedly re-encoding between lossy formats. Each round trip removes a little more. If you have the original WAV, generate every format you need from it rather than from an MP3 you made earlier.
What happens to your files
Upload the file, choose the target format, and download the result. There is no account to create, no watermark added to the audio, and no cap on how many files you convert.
Frequently asked questions
- Which audio format has the best quality?
- WAV, because it is uncompressed and discards nothing. Among the compressed formats, OGG and AAC generally sound better than MP3 at the same bitrate. Bear in mind that converting a compressed file to WAV does not restore quality - it only stops further loss.
- Will converting MP3 to WAV improve the sound?
- No. The detail that MP3 encoding discarded is gone permanently. The WAV will be several times larger and will sound identical to the MP3. It is still worth doing when a tool requires uncompressed input, but not as a way to recover quality.
- What is the difference between OGG and MP3?
- OGG (Vorbis) usually achieves better quality than MP3 at the same bitrate and is free of patent restrictions, which is why games and open-source projects favour it. MP3 is supported more widely on older hardware, so it remains the safer choice for maximum compatibility.
- Do I need an account to convert audio?
- No. Converting requires no account and no installation, there is no watermark on the output, and there is no limit on the number of files you convert.