Metabolism & Energy
BMR (Mifflin-St Jeor) Calculator
Calculate your Basal Metabolic Rate using the most accurate formula
Metabolism & Energy
BMR (Revised Harris-Benedict) Calculator
Alternative BMR calculation using Harris-Benedict equation
Metabolism & Energy
Cunningham BMR (LBM-based) Calculator
BMR calculation based on lean body mass for athletes
Metabolism & Energy
TDEE + Steps Integration Calculator
Total daily energy expenditure including daily step count
Metabolism & Energy
Thermic Effect of Food (TEF) Calculator
Calculate energy cost of digesting different macronutrients
Metabolism & Energy
Weight Loss Timeline Calculator
Project weight loss over time with dynamic TDEE adjustment
Macros & Diet Types
IIFYM Macro Split Calculator
If It Fits Your Macros - flexible dieting macro calculator
Macros & Diet Types
Zone Diet 40/30/30 Macro Calculator
Calculate macros for the Zone Diet approach
Micronutrients
Vitamin D Intake Calculator
Assess vitamin D needs based on age and lifestyle
Micronutrients
Daily Iron Intake Calculator
Calculate iron requirements for different populations