USDA Nutrient Calculator
Use this calculator to determine the total nutritional content of a specific serving size, based on the per 100-gram values often provided by USDA food databases. This tool helps you scale nutrient information to your actual portion sizes for accurate dietary tracking.
Nutritional Breakdown for (g)
Total Calories: 0 kcal
Total Protein: 0 g
Total Carbohydrates: 0 g
Total Fat: 0 g
Understanding USDA Food Data and Nutrient Tracking
The United States Department of Agriculture (USDA) provides extensive databases of food composition, offering detailed nutritional information for thousands of food items. This data is a cornerstone for nutrition research, public health initiatives, and individual dietary planning. While these databases typically present nutrient values per 100 grams, our daily food intake rarely comes in exact 100-gram portions.
Why is this calculator useful?
Accurate nutrient tracking is crucial for managing health, weight, and specific dietary needs. Whether you're counting calories, monitoring macronutrients (protein, carbs, fat), or adhering to a specific diet, knowing the precise nutritional content of your actual serving sizes is key. This USDA Nutrient Calculator bridges the gap between the standardized 100-gram data and your real-world portions.
How to use the USDA Nutrient Calculator:
- Identify Your Food Item: Enter the name of the food item you are analyzing. This helps you keep track of your entries.
- Find Per 100g Values: Look up the nutritional information for your food item from a reliable source, such as the USDA FoodData Central database or a reputable food label. Enter the Calories, Protein, Carbohydrates, and Fat values per 100 grams into the respective fields.
- Measure Your Serving Size: Accurately weigh or estimate your serving size in grams. Enter this value into the "Serving Size (grams)" field.
- Calculate: Click the "Calculate Nutrients" button to see the total nutritional breakdown for your specified serving.
Example: Calculating Nutrients for a Banana
Let's say you're eating a medium-sized banana. According to USDA data, 100 grams of raw banana contains approximately:
- Calories: 89 kcal
- Protein: 1.09 g
- Carbohydrates: 22.84 g
- Fat: 0.33 g
If your medium banana weighs 118 grams, you would input these values into the calculator:
- Food Item Name: "Banana, raw"
- Calories (kcal) per 100g: 89
- Protein (g) per 100g: 1.09
- Carbohydrates (g) per 100g: 22.84
- Fat (g) per 100g: 0.33
- Serving Size (grams): 118
The calculator would then output:
- Total Calories: 105.02 kcal
- Total Protein: 1.29 g
- Total Carbohydrates: 26.95 g
- Total Fat: 0.39 g
This allows for precise tracking, helping you make informed dietary choices based on your actual consumption.