My calorie counter says that I should eat about 1700 calories a day, but I tend to try to stay a little under that mark. I typically average around 1600 and that is working for me. I have more than 100 lbs to lose and am off to a great start. 4 lbs this week so far. I also allow myself to have a late night snack of yogurt or something small that is 100 calories or lower. That way I don't feel like I am going to bed with an empty stomach.