BMI - WebMD tells you how to use body mass index, or BMI, to determine if you are overweight.
MuscleWiki - Understand your body, simplify your workouts
Body Fat Calculator by GigaCalculator - Body fat calculator - estimate your body fat percentage and body fat mass.
BodyBuilding Macro Calculator - BodyBuilding Macro Calculator is a macronutrient measuring calculator that tells you how many calories, proteins, and carbs you should take according to your goals.
IMCPro - The body mass index (BMI/IMC), or Quetelet index, is a heuristic proxy for human body fat based on an individual's weight and height.
Macrosinc - Macrosinc is a fitness and healthy nutrition website that help people in gaining fitness and health-related guides.