I hope this hasn't been posted before. I find it so motivating that I had to share it. I don't know, it's somehow different from the other calculators I found. http://www.losertown.org/eats/cal.php I calculate it every time I'm tempted to go over my calorie goal. It really gets me back into the mentality that I just have to wait and will reach my GW if I simply stick to the plan.