FitCalculationAll 11 calculators
Grouped by the question you are actually asking. If you want to know how many calories to eat, start with energy expenditure. If you already have a number and want to know what to do with it, start with macros. If the question is what your body is made of, start with body composition.
Energy Expenditure & Calories
How many calories should I eat each day?
Work out what you burn in a day, then turn that number into a daily calorie target for losing, maintaining, or gaining weight.
TDEE Calculator
Estimate the calories you burn each day from your basal metabolic rate and activity level.
Calorie Calculator
Find the calories you need to lose, maintain, or gain weight.
Calorie Deficit Calculator
Work out the daily calorie deficit and calorie target for a weekly weight-loss goal.
Calorie Surplus Calculator
Work out the daily calorie surplus and calorie target for a weekly weight-gain goal.
Bulking Calculator
Work out the calories to eat while bulking and the daily protein target to aim for.
Macros & Protein
How do I split those calories?
Turn a calorie target into daily protein, carbohydrate, and fat targets, or set a protein intake on its own.
Macro Calculator
Split your daily calories into protein, fat, and carbohydrate targets.
Protein Calculator
Calculate your daily protein intake in grams and calories from your body weight and goal.
Body Composition
What is my body actually made of?
Measure body fat and lean mass, check BMI against the standard ranges, and plan a recomposition that keeps your lean mass.
Body Fat Calculator
Estimate your body fat percentage from simple tape measurements.
Lean Body Mass Calculator
Work out your lean mass and fat mass from your body weight and body-fat percentage.
BMI Calculator
Check your body mass index and see where your weight falls on the standard range.
Body Recomposition Calculator
Estimate your maintenance calories, a modest recomposition calorie target and a daily protein target for losing fat while keeping lean mass.