Calories & Metabolism
Basal Metabolic Rate (BMR), Total Daily Energy Expenditure (TDEE), and daily energy balance calculations based on metabolic research.
BMR Calculator
Calculate Basal Metabolic Rate using the gold-standard Mifflin-St Jeor equation
TDEE Calculator
Total Daily Energy Expenditure based on physical activity level and BMR
Calorie Calculator
Calculate daily calorie requirements tailored for weight loss, maintenance, or muscle gain
Maintenance Calories Calculator
Find the exact energy balance to keep your body weight completely stable
Calorie Deficit Calculator
Calculate evidence-based caloric deficits for safe, sustainable fat loss
Calorie Surplus Calculator
Calculate energy surplus for lean muscle hypertrophy with minimal fat gain
Weight Loss Calorie Calculator
Calculate exact daily calories required to achieve your target weight loss rate
Weight Gain Calorie Calculator
Calculate daily calories required for healthy weight gain and mass accrual
Weight Goal Calculator
Calculate the exact energy balance and daily caloric shift needed to hit your goal weight
Calories Burned Calculator
Calculate caloric expenditure across duration, body weight, and exercise intensity
Exercise Calories Calculator
Specific workout calorie expenditure estimation across sports and gym training
Resting Metabolic Rate Calculator
Calculate resting metabolic rate (RMR) with optional Cunningham lean mass calibration
Active Metabolic Rate Calculator
Calculate Active Metabolic Rate including daily occupation and deliberate training
Metabolic Age Calculator
Compare your basal metabolic rate against demographic population averages
Thermic Effect of Food Calculator
Calculate the energy expended digesting, absorbing, and assimilating nutrients
Mifflin-St Jeor BMR Calculator
Dedicated execution of the 1990 Mifflin-St Jeor Resting Energy Expenditure formula
Harris-Benedict BMR Calculator
Calculate BMR using the revised Roza-Shizgal 1984 Harris-Benedict equation
Cunningham RMR Calculator
Calculate resting energy expenditure directly from Fat-Free Mass (FFM)
Katch-McArdle BMR Calculator
Calculate BMR using the Katch-McArdle lean mass equation
BMR Comparison Calculator
Compare Mifflin-St Jeor, Harris-Benedict, Katch-McArdle, and Cunningham side-by-side