What is the propper dB value to normalize mp3 music files to?

[chiwawa626]

What is the propper dB value to normalize mp3 music files to?

 

[dquan97]

I'd like to know too...usually I set mine for -3dB

 

[EyeMWing]

Normalize to -1. 0 is the beginning of distortion, and some normalization algorithms won't stop exactly where you tell it to, so you don't want to normalize to 0.