Just changed my activity level, how does this affect things?

gemmaleigh1989

I just changed my activity level from sedentary to lightly active. I walk around a lot at work so I thought that would be the right thing to do. How does this affect my calories??

BMR 1200
TDEE 1500 at sedentary and 1650 at lightly active.

The TDEE I noted does not include extra exercise I log on MFP. I aim to NET at 1200 calories each day. I am just a bit confused about how changing my activity level changes things.

When I had it at sedentary I used a fit bit to calculate the difference I should eat back, but now i changed the level, I wont be using the calorie adjustments by fitbit (it was playing up today and giving HUGE numbers and jumping around all over the place every time I resynced). Does that mean I should just eat that extra 150 cals a day and net at 1350? I don't want to net below 1200 but if I go by MFP and net at 1200, wouldnt the unaccounted for walking around at work make it go below 1200??

Fat loss is my goal at the moment.

Thanks very much!!