# Does a wider magnet mean less flux density?

I was using an online magnet strength calculator when I halved the diameter of the theoretical N52 magnet. The dimensions went from 32mm in diameter and 3mm thick, to 16mm in diameter and 3mm thick. The surface field heightened from 1,364 Gauss to 2,598 Gauss instead of lowering (which is what I would expect). Why is this?