14 calculators
Energy & Metabolism
Calories, metabolism, maintenance, and daily energy expenditure calculators.
Calculators
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BEE Calculator
Calculate basal energy expenditure with the original Harris-Benedict formula, compare BEE vs BMR meaning.
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BMR Calculator
Estimate basal metabolic rate with Mifflin-St Jeor, the Harris-Benedict equation, and optional Katch-McArdle, then compare maintenance-calorie starting points.
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Calorie Calculator
Estimate daily calorie needs, maintenance calories, target intake, macro guidance, and per-meal checkpoints in one calorie calculator for weight loss.
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Calorie Density Calculator
Use this calorie density calculator to turn calories and serving weight into kcal per gram, kcal per ounce, kcal per 100 g, realistic portion sizes.
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EER Calculator
Use the EER calculator to estimate adult maintenance calories with current DRI estimated energy requirement equations, activity-row comparisons.
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Harris Benedict Calculator
Use this Harris Benedict equation calculator to compare original Harris-Benedict, revised Harris-Benedict, and Mifflin-St Jeor BMR outputs.
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Katch-McArdle Calculator
Estimate Katch-McArdle BMR from lean body mass or body weight plus body fat percentage, then compare TDEE, calorie-planning rows, goal-weight checkpoints.
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Kilograms to Calories Converter
Estimate the calories needed to lose or gain a target number of kilograms, compare rough timelines at your chosen daily pace.
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Mifflin-St Jeor Calculator
Calculate BMR with the Mifflin-St Jeor equation.
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Pounds to Calories Converter
Convert a target weight change in pounds into an approximate calorie surplus or deficit, then compare rough timelines, weekly pace.
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Quarantine Activity Calculator
Estimate restricted-activity calorie needs during quarantine, injury recovery, bed rest, or other low-movement periods.
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RMR Calculator
Use this RMR calculator to estimate resting metabolic rate, compare Mifflin-St Jeor with Harris-Benedict, Katch-McArdle, and Cunningham.
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Thermic Effect of Food Calculator
Estimate calories burned digesting a meal from protein, carbohydrate, and fat, then compare midpoint, range, preset meal scenarios.
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Weekly Energy Balance Calculator
Log daily calorie intake and expenditure across up to 7 days to estimate net energy balance and projected weight change for the week.
Related categories
Macros
Protein, carbs, fat, and macro-target calculators.
Protein Planning
Protein target, meal-planning, sport, and specialist protein calculators.
Carbs & Fibre
Glycemic index, glycemic load, fibre intake, and carbohydrate timing calculators.
Goal Planning
Calorie deficit, fat-loss, surplus, and body-recomposition planning calculators.