This ranking surfaces 200 foods that match the Low Calorie Foods filter, defined by the rule Calories ≤ 40 per serving, drawn from the USDA FoodData Central database. Foods with 40 calories or fewer per serving — great for volume eating. The list is ranked by calories, so the top of the page is where each food delivers the most impact against the filter. At number one sits SPARKLING WATER with 1.0cal of calories per serving, giving you a concrete benchmark before you scroll.

Across the current page, the average calories value works out to 1.0cal, with an average of 1 calories per serving. Comparing individual foods to these averages shows whether a pick is genuinely standout or merely borderline against the diet rule. Because the rule is applied consistently across every food in the database, raw ingredients, brand-name products, and USDA survey entries, you get an apples-to-apples ranking rather than curated editorial picks.

Each food title links to a full FDA-format nutrition label with macros, micronutrients, and daily values so you can drill past the headline rule into supporting context like sodium, fiber, and sugar. With 4 pages of matching foods, this ranking is suitable for meal planning, grocery list building, and cross-checking claims from diet books or social media. Values reflect the USDA's standardized per-serving reporting, and the guides linked from the site explain how to translate per-100g data into real plate portions, spot hidden sugars, and compare foods for healthier choices.