Body Weight Simulator

Check out this body weight simulator. It's a really neat weight loss model. Enter your height, weight, age gender and activity level get all kinds of information. Put in a weight goal it will show you how many calories you need to eat per day to reach your goal. It also gives you your predicted daily weight and body fat, so you can see how it will change over time.

How will changes in exercise or diet alter the speed of your weights loss? A feature let's you do just that. And, it can be set it to make immediate or gradual changes. The results of the simulation are presented in a table and in interactive graphs.

For those of you who are more scientifically minded. Here are two papers describing the mathematical model used in the simulator.
Quantification of the effect of energy imbalance on bodyweight
Dynamic mathematical model of body weight change in adults

*Note: I am in no way affiliated with this simulator. I just think it's really cool!