Health Performance.
Bio-metric analytics tuned for athletes and health-conscious professionals. Determine accurate caloric burns and build custom macronutrient partitions based on verified physiological models.
BMI & BMR Lab
Calculate your Body Mass Index and Resting Metabolic Rate accurately. Predict caloric needs based on specific lifestyle activity multipliers.
Launch ToolMacro Partitioning
Breakdown daily calorie intake into optimal grams of Protein, Carbohydrates, and Fats according to standardized athletic ratios.
Launch ToolComposition Analysis
Professional estimation of body composition using the US Navy method. Differentiates between adipose tissue and functional lean mass.
Launch ToolExpenditure Architect
Map your Total Daily Energy Expenditure. Includes basal metabolic rate and physical activity multipliers for precise management.
Launch ToolShower vs Bath Cost
Compare the annual water and energy cost of showers versus baths. Find which saves more money and water for your household.
Launch ToolHydration Monitor
Calculate your daily water intake requirement based on body weight, activity level, and climate. Results in liters, fl oz, and glasses.
Launch ToolLooking up a term?
BMI, BMR, TDEE, macros, caloric deficit, body fat percentage — all defined plainly.
Research & Notes.
In-depth articles on the math and logic behind our tools — written for people who want to understand the calculations, not just run them.
BMI Is Flawed — Here's What Body Fat Percentage Tells You Instead
BMI classifies elite athletes as obese and misses metabolically unhealthy individuals with normal weight. Here is why body fat percentage is a more accurate health metric and how to calculate it.
How to Calculate Your Macros for Body Recomposition
Body recomposition — simultaneously losing fat and gaining muscle — requires specific macronutrient targets that differ from both bulking and cutting protocols. Here is the calculation.
TDEE vs BMR: Understanding the 500-Calorie Deficit Rule
The 500-calorie deficit rule is the most commonly cited formula for fat loss. Here is where it comes from, why it is a simplification, and how to apply it accurately to your own metabolism.