I have to say that that calculator is one of the stupidest things I have ever seen.
It is not unhealthy to be so jacked that you weigh a lot. For example someone 6'3", 225 lbs -> a 28+ on that scale, OBESE. But, the calculation does not take into effect percentage of body fat or any other factors.
It may be entertaining, but useful? I think not.
Just my two cents.
BTW - I'm 6'3", 205, and 6% body fat.