How old is masterchief

We are never told how old Master Chief really is.

Masterchief is a human, though, and his "suit" can make him do out-of-the-ordinary things. This makes it hard to tell how old he is, but I would have thought around 40, judging by his voice.

Glitches show an alien face covered in scars. I would like to inform you that glitching is not an actual way of seeing his face. It is just randomage.