MFP Calorie Calculator Wrong????

Thanks everyone!
My BMR is 1457 according to online calculation site (http://scoobysworkshop.com/calorie-calculator)
And I'm losing only about 200-400 calories per exercise session.
I’m eating about 1550 total calories on gym days, and 1300-1400 total calories on rest days.
Is this ok? Or should I consume more?

So are you a sedentary desk job / commute for 45 hrs weekly, no kids playing around with or pets, not much yard work or other weekend activities, bump on a log outside exercise?

So estimated burn on those days is 1821, so 500 cal deficit may or may not be reasonable.
Got 25 or more lbs to lose still? Then yes.

So then on workout days burning around 2100, so 1600 would be about same 500 cal deficit.
Again, depends on reasonable. And how you estimate exercise burn.

But guess what, use MFP as designed and that all works out correctly too.
You are within range either way if you indeed have that much to lose.