Free Nutrition Tools
Professional-grade calculators used by dietitians, available free for everyone. Whether you're a registered dietitian planning client programs or someone tracking personal nutrition goals, these tools provide the accurate, evidence-based calculations you need.
TDEE Calculator
Calculate your Total Daily Energy Expenditure, BMR, BMI, and personalized macro split for any goal.
BMI Calculator
Calculate your Body Mass Index, see your weight category, and get your healthy weight range.
Meal Plan Beautifier
Transform plain meal plans into beautiful, branded PDFs your clients will love.
Coming SoonWhy Use Professional Nutrition Calculators?
Accurate nutritional calculations form the foundation of effective dietary planning. Whether you're a clinical dietitian building personalized meal plans or an individual tracking daily intake, using evidence-based formulas ensures your targets are grounded in science rather than guesswork.
Our calculators use peer-reviewed metabolic equations including the Mifflin-St Jeor and Harris-Benedict formulas, which are the same methods used in clinical nutrition practice worldwide. Each tool automatically selects the most appropriate formula based on your inputs to maximize accuracy.
All DietBoard nutrition tools are completely free, require no account or signup, and run entirely in your browser for privacy. Dietitians can use these tools alongside DietBoard's practice management platform to streamline client assessments and meal plan creation.
For Dietitians
Quickly assess client energy needs during consultations. Use TDEE and macro calculations as a starting point for personalized nutrition plans, then refine based on clinical judgment and individual response.
For Individuals
Understand your daily calorie needs and macro targets for weight loss, maintenance, or muscle gain. These same formulas are used by nutrition professionals to create client programs.