Vitamin D Calculator
Calculate vitamin d requirements, recommended daily allowances, and meal plans with ease.
Nutritional Inputs
Enter maintenance calories, target deficit, or body weight.
Target Daily Energy Intake
Nutrition Tip
A 500 kcal daily deficit yields approximately 1 lb of fat loss per week (3,500 kcal total weekly deficit).
Nutritional Science & Metabolic Methodology
Formulas
Applies standard dietary energy balance equations and macro ratio distributions.
Important Diet Disclaimer
Extreme calorie restriction (<1,200 kcal/day) is unsafe without clinical supervision. Consult a dietitian.
How to Calculate Daily Nutrient Targets Step-by-Step
Follow these simple steps for dietary planning:
Determine Total Daily Energy Expenditure (TDEE)
Calculate your maintenance calories based on age, sex, weight, and activity level.
Choose Weight Loss or Gain Deficit/Surplus
Select a moderate 300–500 kcal daily deficit for fat loss or surplus for muscle growth.
View Target Calorie & Macro Distribution
Instantly view calculated daily target calories and daily protein/carbs/fat gram split.
Detailed Insights & FAQ
ℹ️ About this Calculation
Proper energy intake and protein distribution prevent lean muscle loss during calorie-restricted diets.
Variable Glossary
TDEE / Deficit
Maintenance energy and target deficit.
Target Intake / Fat Loss
Calorie target and estimated weekly weight loss.