What scientific formulas does FitScanned use for health calculations? How We Calculate Your Health
Evidence-based formulas you can trust. We use industry-standard equations from recognized institutions to give you accurate, science-backed nutrition guidance.
Is FitScanned a medical device? Important: Not Medical Advice
FitScanned is a wellness and fitness tracking tool, not a medical device. Our calculations are based on established nutritional science and industry-standard formulas, but they should not replace professional medical advice. Always consult with a healthcare provider or registered dietitian for personalized medical guidance, especially if you have health conditions or take medications.
We use formulas recommended by the Academy of Nutrition and Dietetics and the World Health Organization (WHO). These are the same standards used in clinical nutrition settings worldwide.
How does FitScanned calculate calorie and nutrition targets? Understanding Each Calculation
Basal Metabolic Rate (BMR)
BMR is the number of calories your body burns at complete rest, just to maintain basic functions like breathing, circulation, and cell production. It's the foundation for all other calorie calculations. We use the Mifflin-St Jeor equation, which is considered the most accurate non-clinical formula and is recommended by the Academy of Nutrition and Dietetics.
Calculation Methodology
Total Daily Energy Expenditure (TDEE)
TDEE is your total daily calorie burn, accounting for your activity level. We multiply your BMR by an activity factor based on how much you exercise. These factors come from the Harris-Benedict methodology and are the standard used worldwide in nutrition science.
Calculation Methodology
Macro Allocation (Protein, Carbs, Fat)
We allocate calories among protein, carbs, and fat using evidence-based guidelines. Protein gets priority because it supports muscle health and recovery. Fats come next to ensure hormonal health. Carbs fill the remainder as your primary fuel source. Our protein recommendations are backed by meta-analyses on athletic performance and muscle building.
Calculation Methodology
Daily Water Intake
Adequate hydration is essential for all body functions. We recommend 35 ml per kilogram of body weight, clamped between 2000-4500 ml. This guideline comes from clinical nutrition standards and is based on the body's need for water across different body compositions and activity levels.
Calculation Methodology
Body Mass Index (BMI) & Classification
BMI is a screening tool used worldwide to categorize weight status. It's calculated using just height and weight, making it simple but imperfect—it doesn't account for muscle mass, bone density, or fitness level. We use WHO classifications as the standard reference.
Calculation Methodology
Health Score Calculation
Your daily health score combines four key wellness metrics: daily steps, sleep duration, nutrition adherence, and hydration. Each component is weighted based on its importance to overall health. This is a motivational metric to help you see how well you're meeting your personal goals.
Calculation Methodology
Try the FitScanned interactive metabolic calculator. Interactive Calculator
Use our calculator to see how your personal stats translate into your daily calorie and macro targets. Try different activity levels or goals to see how they affect your nutrition plan.
Give It a Try Yourself
BMR
Calories at rest
TDEE
Daily calories to maintain
Daily Water
Recommended intake
Daily Macro Targets
Protein
98.0g
15% of calories
Carbs
430.6g
67% of calories
Fat
49.0g
17% of calories
BMI
Step Goal
Frequently Asked Questions
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