Calculator category
Nutrition Calculators
Daily energy, nutrient, hydration, and healthy-weight estimates.
Explore 10 free, evidence-informed tools with transparent formulas and practical guidance.
All nutrition tools
- Protein Calculator Estimate a personalized daily protein target from body weight, activity, age, and goal. Use calculator →
- Calorie Calculator Estimate daily calories for maintenance, weight loss, or gradual weight gain. Use calculator →
- TDEE Calculator Estimate total daily energy expenditure from BMR and activity. Use calculator →
- BMR Calculator Estimate calories your body uses at complete rest. Use calculator →
- BMI Calculator Calculate adult body mass index and its screening category. Use calculator →
- Macro Calculator Estimate daily protein, carbohydrate, and fat targets. Use calculator →
- Water Intake Calculator Estimate total daily water needs, including an exercise allowance. Use calculator →
- Fiber Intake Calculator Estimate a daily fiber target from calorie intake. Use calculator →
- Lean Body Mass Calculator Estimate fat-free body mass with the Boer equation. Use calculator →
- Ideal Weight Calculator Compare the Devine reference weight with a BMI-based range. Use calculator →