Nutrition & Diet Calculators
19 free calculators for calories, macros, hydration, and specialized diets.
Calories
BMR Calculator
Calculate your basal metabolic rate — calories burned at rest.
Calorie Deficit Calculator
Find the calorie deficit needed to reach your weight loss goal.
Meal Calorie Calculator
Estimate calories in a meal from common food portions.
Food Portion Calculator
Convert food portions to grams, ounces, or cups.
Macros
Macro Ratio Calculator
Calculate your optimal protein, carb, and fat macros.
Protein Intake Calculator
Determine your daily protein needs based on weight and activity.
Carb Cycling Calculator
Plan high, medium, and low carb days for performance and fat loss.
Diabetic Carb Calculator
Calculate carbohydrate intake for blood sugar management.
Hydration
Nutrients
Fiber Intake Calculator
Find your recommended daily fiber intake by age and gender.
Sodium Intake Calculator
Calculate your daily sodium needs and health guidelines.
Sugar Intake Calculator
Estimate daily added sugar limits and current consumption.
Vitamin D Calculator
Estimate vitamin D needs based on sun exposure and diet.
Iron Deficiency Calculator
Check your daily iron requirements and deficiency risk.
Caffeine Calculator
Calculate safe daily caffeine intake based on body weight.