Free Health Tools
Body & Fitness Calculators
Calculate BMI, BMR, TDEE, body fat percentage, ideal weight, and more. Free, instant results with medical references.
Weight Journal
Log and track your weight over time. Monitor trends, set goals, and share history with your doctor. Supports kg and lbs.
Use ToolBMI Calculator
Calculate your Body Mass Index (BMI) based on height and weight. Understand what your BMI means for your health with WHO categories.
Use ToolBMR Calculator
Calculate your Basal Metabolic Rate (BMR) using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas. Find out how many calories your body burns at rest.
Use ToolTDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) based on your BMR and activity level. Know exactly how many calories you burn per day.
Use ToolIdeal Weight Calculator
Find your ideal body weight using Robinson, Miller, Devine, and Hamwi formulas. Compare results across multiple scientific methods.
Use ToolBody Fat Calculator
Estimate your body fat percentage using the U.S. Navy method. Get your fat mass, lean mass, and body fat category based on ACE guidelines.
Use ToolLean Body Mass Calculator
Calculate your lean body mass using Boer, James, and Hume formulas. Understand your fat-free weight and body composition.
Use ToolFFMI Calculator
Calculate your Fat-Free Mass Index (FFMI) to evaluate your muscularity relative to your height. Normalized FFMI included.
Use ToolCalorie Needs Calculator
Calculate your daily calorie needs for weight loss, maintenance, or gain. Personalized calorie targets based on your TDEE and goals.
Use ToolWater Intake Calculator
Calculate how much water you should drink daily based on your weight, activity level, and climate. Stay properly hydrated.
Use ToolTarget Heart Rate Calculator
Calculate your target heart rate zones for exercise using Karvonen, Haskell-Fox, and Tanaka methods. Optimize your training intensity.
Use ToolWant to understand your full health picture?
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