Nutrition & Diet Calculators

Nutrition & diet calculators help students, health professionals, and researchers quickly estimate daily nutrient intake, protein requirements, and caloric needs. Calculate RDA percentages, glycemic load, energy density, amino acid scores, and protein digestibility for personalized diet planning.

These tools also cover BMI-adjusted caloric needs, nitrogen balance, weight change based on caloric deficit or surplus, and vitamin D synthesis from sun exposure. Use these calculators to optimize diet strategies, support health research, and simplify nutritional assessments.

⚠ Disclaimer: These calculators are based on standard formulas and simplified assumptions. They are intended for educational purposes only and should not replace professional dietary advice or clinical measurements.

Micronutrient % RDA

Intake (mg) RDA (mg)

Protein Requirement

Weight (kg) Factor (g/kg)

Weight Change (Calories)

Calorie Diff (kcal)

Amino Acid Score

Meal AA (mg) Reference AA (mg)

Glycemic Load

Carbs (g) GI

Energy Density

Calories (kcal) Weight (g)

Nitrogen Balance

Protein Intake (g) Urinary N (g)

BMI Caloric Needs

BMI Base Calories

Protein Digestibility

Digestibility (%) AA Score (%)

Vitamin D from Sun

Exposure (min) Skin Area (%)