Food calorie calculator

Choose the right food record

Type a food name, narrow the search with preparation details, and choose an entry containing its FDC identifier. Raw, cooked, drained and dried foods can have substantially different values per gram. A food name can appear in both data releases, so the identifier makes your choice explicit.

Add up to ten foods. Quantities can be in grams, kilograms, ounces or pounds. When USDA provides a household portion for the chosen record, you can select it instead. Each quantity counts the complete label: a portion labelled 2 tablespoons represents both tablespoons together. Changing units preserves the equivalent mass. Changing foods returns the measurement to grams so one food's household portion is not carried over to another.

How calories and nutrients are added

For each nutrient, multiply the food's reported amount per 100 grams by the grams used, then divide by 100. Add those contributions across the foods and divide by the number of equal servings. Calorie values use the USDA energy entry, rather than reconstructing energy from rounded macro amounts.

For example, the SR Legacy record for raw bananas (FDC 173944) reports 89 kcal per 100 g. Using 100 g gives 89 kcal in the meal. Split into two equal servings, that is 44.5 kcal per serving. The calculator also shows energy in kilojoules using 1 kcal = 4.184 kJ.

Foundation records use Atwater specific energy when reported, followed by Atwater general energy and then the reported energy field. SR Legacy uses its reported energy value. Different energy methods, food samples and preparation can explain differences between database entries.

Ingredient weight and cooked dish weight

The per-100-g figure uses the sum of ingredient weights unless you enter the actual finished dish weight and its mass unit. This optional value is useful when cooking changes water content. It changes energy per 100 g without changing the summed energy or equal-serving totals.

The tool does not model nutrient retention, oil absorption, discarded liquids, bones or other losses. Use the edible quantities actually eaten and the closest suitable prepared-food records. A finished weight alone cannot account for ingredients or nutrients that were removed.

Read missing values and source dates

A missing nutrient is different from a reported zero. If any positive-quantity ingredient lacks a nutrient value, that whole-recipe and per-serving nutrient total is shown as unavailable. The coverage note names the missing nutrients. A zero-quantity food contributes no nutrients and does not make another food's totals unavailable.

This local snapshot combines SR Legacy's final April 2018 release with Foundation Foods from April 2026. Records without a reported calorie value are excluded. Food composition varies, and older entries may differ from products sold today. Use the package label when it provides values for the exact product. These estimates are not a certified nutrition label.

Inputs for the food calorie calculator