Free online tools to track your body metrics, nutrition, and wellness goals.
Calculate your Body Mass Index from your height and weight. See if you are underweight, normal, overweight, or obese.
Calculate BMI →Estimate daily calorie needs for weight loss, maintenance, or gain using the Mifflin-St Jeor equation.
Calculate Calories →Estimate body fat percentage using the U.S. Navy method with neck, waist, and hip measurements.
Calculate Body Fat →Find your ideal body weight using four medical formulas: Devine, Robinson, Miller, and Hamwi.
Calculate Ideal Weight →Enter your last menstrual period date to estimate your due date, current week, and trimester.
Calculate Due Date →Find your recommended daily water intake based on weight, activity level, and climate.
Calculate Water Intake →Get your daily protein, carbs, and fat targets based on your calorie goal and diet type.
Calculate Macros →Our health calculators use well-established medical formulas and guidelines to provide quick, reliable estimates. Whether you are tracking your fitness progress, planning a diet, or just curious about your body metrics, these tools give you a solid starting point.
These calculators are for informational purposes only and should not replace professional medical advice. Always consult with a healthcare provider for personalized health recommendations.