If you would like to take advantage of the technology on the web and figure out your exercising heart rate, select the first formula on the Heart Rate Calculator. For those of you that would prefer calculating your training heart rate manually a seperate page using the same formula is available. The calorie calculator from Stevens Creek allows you to calculate the number of calories expended throughout the day for all types of physical activity. The Body Fat Estimator will give you a ballpark measure of your body fat percentage.