Thedollylala That is similar to fat2fit calculator or any calulator for BMR and TDEE.
http://www.fat2fitradio.com/tools/bmr/
I too started at 1200 calories a day on My fitness pal. I was able to eat at that level for several weeks. After starting to work out consitantly I felt soo tired and grumpy. I upped my calories to 1500 then found out about BMR and increased it again to 1700. My BMR is 1690. With lifting weights and cardio I needed those calories.
There are 2 groups on my fitness pal that encourage higher calories and exercise (lifting weights) to lose in a healthy way. You do not loose as fast but you also don't lose muscle in the process. Eat more to weigh less
http://www.myfitnesspal.com/forums/s...-to-weigh-less and In place of a road map
http://www.myfitnesspal.com/forums/s...-of-a-road-map Both suggest eating above your basic body requirement and below your TDEE (total daily enegry requirment). Most suggest 15% below your tdee. I am very overweight so am going for 30% below.
I try and eat at 30% below my TDEE which is about 1900-2000 cal/day. I lift weights 3x a week and do cardio (walk 1.6 miles in 30min) 3x a week. I am still trying to work my way up to that level. Its hard psychologically to eat more. I am eating about 1800 on nonlifting days and 2000 on lifting days.