I was just on myfitnesspal and looked at the tools section and did the calculation for the BMR.

Just to make sure I understand this. The number it gives me is what I would burn doing nothing for 24 hours.

This is where the confusion is coming in.
It said I would burn @ 1700 calories.
But when I did the other part of the calculator (this was awhile ago so I may be wrong) it said I needed 1860 a day to lose weight.

Wouldn't I need to eat LESS THEN my BMR to lose weight?

That's what I would think too!! I guess they figure that if you do a minimum of moving everyday, so they add the calories burned for it and with exercising you would still be in a deficit to loose?!?! Don't know if I make any sense...

Did the calculator take in consideration your muscle mass, age and height? We may weight the same but don't burn the same calories for the same exercise...it's a bit tricky and like you said very confusing!!!

Have you been counting calories for a while did that help you lose the weight?

I'm not certain how MFP calculates things... but read the metabolic rate section of the article linked in this thread:

http://www.3fatchicks.com/forum/weig...damentals.html

My BMR according to MFP is 2,118, and the app tells me I need 2170 calories a day, I'm not sure on what it all means tbh, I don't think I have very much muscle so for my body to burn that many without me doing anything doesn't seem right to me, but it does say at the bottom that it's only meant to be a guideline, my exercise makes up for the calories that it tells me my body hasn't burnt

It asks your height, weight and age but not muscle mass

BMR is a different animal than TDEE. BMR is the calories you'd burn doing nothing, like you said. But you don't just lay in bed all day, right? You're somewhat active, at least? Those activities add calories to you total daily energy expenditure and is the total from which you subtract calories to arrive at your weight loss daily calorie target.