MyFitnessPal.com is an absolutely free diet and fitness website that combines a high degree usability with some more-than-handy free tools. The web might be teeming with "health sites" that promise a great deal, take your money and then fail to deliver, but MyFitnessPal avoids being part of that group. They don't even take your credit card number, yet they'll provide you with some premium information.
Case in point: The free calorie counter at MyFitnessPal. This tool does just what you'd expect it to do--it provides caloric information about the food you're eating. But it goes the extra mile by offering up some great free nutritional information and guidance. You can also use their free bmi calculator to establish health goals and/or check your personal progress. They also have a free bmr calculator available.
If you're interested in improving your health and the overall quality of your life, it makes sense to visit MyFitnessPal. This is one free site that outperforms many paid options.