The effects of a diet or exercise program can only be monitored when you have accurate biometric data. This web page will help you calculate your Body Mass Index (BMI),
Waist-to-Height ratio, percent body fat, and lean body mass. You also get an estimate of your daily calorie and protein requirements based on your level of activity.
It is a good idea to record your measurements once per week to keep track of your progress. If you keep the data in a spreadsheet (e.g., MS Excel) you will be able to create charts to see trends more easily.