Nutrition data sources
Updated: October 11, 2026 · reference database: 2026-07-24
Why this page exists
FoodWarz publishes reference pages such as “calories in …” and “macros in …”. They help estimate a portion quickly, but they do not replace the label on your package or the recipe in your kitchen.
Primary sources
- USDA FoodData Central (public domain, CC0 1.0) for baseline food values and, for users in the US, packaged products in search and barcode lookup;
- Open Food Facts for packaged products and brands;
- FatSecret Platform API for US food search and barcode lookup;
- manufacturer labels, recipe databases and curated reference tables;
- manual normalization of popular dish names and serving sizes.
How we cite USDA FoodData Central
USDA FoodData Central data is in the public domain under CC0 1.0. We cite it the way USDA asks: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2026. fdc.nal.usda.gov. Branded products add the USDA Global Branded Food Products Database version, and their values are supplied by the manufacturer.
FoodWarz is not affiliated with or endorsed by the U.S. Department of Agriculture (USDA), and we do not use USDA logos or marks.
How portions are calculated
Reference tables show values per 100 g. Typical serving sizes are listed separately and may differ from what is on your plate. Oil, sauces, sugar, cooking method and brand can change the result significantly.
In-app estimates
When a user logs a meal by photo or text, FoodWarz uses AI models and internal food references. The result is a practical diary estimate that can be edited before saving.
Accuracy and limits
We periodically review high-traffic pages and fix obvious outliers. If you spot an error, email support@foodwarz.ru.