Nutrition and Metabolism

    Calories, BMR, TDEE, macros, protein, fats, carbs, calorie deficits and water intake

    BMR Calculator
    Estimate basal metabolic rate with Mifflin-St Jeor, Harris-Benedict, and optional body-fat based equations, using US or metric inputs.
    TDEE Calculator
    Estimate total daily energy expenditure from BMR, steps, workouts, activity components and goal calorie targets, with US or metric inputs.
    Macro Calculator
    Estimate daily protein, carbohydrate and fat targets from calories, activity, goals and common macro splits, with US and metric inputs.
    Protein Calculator
    Estimate a daily protein range from body weight, age, goal, protein source and meal frequency, with US and metric inputs.
    Carbohydrate Calculator
    Estimate daily carbohydrate needs from body weight, activity, calories, training days and carb cycling, with US and metric inputs.
    Fat Intake Calculator
    Estimate daily dietary fat grams from body weight, goal and optional TDEE, with saturated and unsaturated fat planning context.
    Calorie Deficit Calculator
    Estimate maintenance calories, a calorie deficit or surplus, daily target calories and a rough weight-change timeline using US or metric inputs.
    Fiber Calculator
    Estimate a daily fiber target from age, sex, calorie intake and goal, then compare it with a typical current diet pattern.
    Calorie Calculator
    Estimate daily calorie needs from BMR, TDEE, activity level and goal, then review maintenance, weight-loss, weight-gain and macro targets.
    Water Intake Calculator
    Estimate daily water intake from body weight, activity, climate, coffee, alcohol, pregnancy and breastfeeding, with US and metric units.