Calorie Calculator
Estimate your daily calorie norm (TDEE) and macros from sex, age, height, weight and activity.
The calorie calculator shows how much energy your body needs each day. It first calculates your basal metabolic rate (BMR) — the calories your body burns at rest — using the Mifflin-St Jeor equation, then multiplies it by an activity factor to arrive at your total daily energy expenditure (TDEE) for maintaining your current weight.
Enter your sex, age, height, weight and activity level, and the calculator shows your maintenance calories along with goal targets: 15% less for weight loss and 15% more for gaining mass. It also gives an approximate macronutrient breakdown (protein, fat, carbs) using a 30/30/40 split.
Think of this as a starting point rather than an exact medical figure: actual needs depend on metabolism, body composition, lifestyle and health. Track your weight trend over a couple of weeks and adjust your intake accordingly. To see how your weight relates to your height, check the BMI calculator, and to estimate how many calories a workout burns, see activity calorie burn.