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Understanding Nutrient Data

How to read and interpret the nutrition information for foods

4 min readUpdated Jan 15, 2026

Understanding Nutrient Data

ClapDiet provides detailed nutrition information for every food. Here's how to read it.

The Food Detail Page

When you view a food, you'll see:

Header

  • Food name
  • Serving size (e.g., 100g, 1 cup, 1 piece)
  • Data source (USDA, branded, etc.)

    • Nutrition Facts Panel

    Similar to package labels:

  • Calories
  • Macronutrients
  • Key micronutrients
  • Daily value percentages

    • Macronutrients

    Calories

    Total energy from the food. Shown in kcal.

    Protein

    Grams of protein per serving. Important for:

  • Muscle building
  • Satiety
  • Many metabolic functions

    • Carbohydrates

    Total carbs, often broken down into:

  • Total Carbs: All carbohydrates
  • Fiber: Non-digestible carbs (good!)
  • Sugar: Simple sugars
  • Net Carbs: Total minus fiber (important for keto)

    • Fat

    Total fat, sometimes broken down:

  • Saturated Fat: Limit for heart health
  • Unsaturated Fat: Healthy fats
  • Trans Fat: Avoid completely

    • Micronutrients

    Vitamins

  • Vitamin A, C, D, E, K
  • B vitamins (B1, B2, B3, B6, B12)
  • Folate

    • Minerals

  • Calcium, Iron, Magnesium
  • Potassium, Sodium, Zinc
  • Phosphorus, Selenium

    • Special Markers

    For specific health modes:

  • Oxalate: For kidney stone prevention
  • Purines: For gout management
  • Glycemic Index: For blood sugar management

    • Serving Sizes

    Changing Servings

  • Find the serving selector
  • Choose from common servings:

    • - 100g (standard)

    - 1 cup

    - 1 piece/unit

    - Custom amount

  • Nutrition updates automatically

    • Understanding Portions

  • "1 cup" = US cup (240ml)
  • "1 tbsp" = tablespoon (15ml)
  • "1 oz" = ounce (28g)

    • Daily Values (%DV)

    Percentages are based on:

  • Standard 2000 calorie diet
  • RDA (Recommended Daily Allowance)
  • OR your personalized targets (Premium)

    • What the percentages mean:

  • 5% or less: Low in that nutrient
  • 20% or more: High in that nutrient

    • Data Accuracy

    Sources

    Our data comes from:

  • USDA FoodData Central (primary)
  • Regional nutrition databases
  • Manufacturer data (branded items)

    • Limitations

  • Actual nutrition varies by preparation
  • Branded products may change formulas
  • Some nutrients have limited data

    • Missing Data

    If a nutrient shows "—" or "N/A":

  • Data isn't available
  • Doesn't mean it's zero
  • We're constantly adding data
    • Related Articles:
  • Food Health Ratings
  • Where Food Data Comes From
    • nutritionnutrientsdatamacrosvitaminsminerals
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