Basal Metabolic Rate for maintenance

Have any of you done this calculation?  This is to calculate how many calories you need to eat daily to maintain your body weight at your level of activity.  There are online calculators that can do this for you, but I actually went to the underlying formula and calculated it for myself.

It seems crazy--it says I should be eating 1850 calories per day to maintain my current body weight at my current level of activity.   Of course, my perception has been colored by a whole year of eating very small amounts of food, but I can't even fathom how I could eat that much.  Are there any studies that analyze this formula with relation to WLS patients?  Since our innards have been rearranged, I wonder how that might change the formula.  Especially considering we were probably very efficient processors of food to start with.

Just wondering...

 Stephanie did it twice

Better off doing the resting metabolic rate test that they have at some gyms - it calculates resting rate - meaning how many calories you are burning just being alive - not even counting activities.  That will give you a better idea of how YOU are burning - not a calculation. 

I don't belong to a gym, and don't have the money to pay for the testing.  One person I know paid something like $500 for testing--I just can't do it. 

Lately it hasn't been an issue, b/c I have been eating too much.  I am working hard to find the balance...