Fresh red tomato has 18 kcal per 100 g. The year-round average entry covering all seasons. Summer Bulgarian tomatoes taste noticeably better than winter imports.
How should I track Tomatoes, red, ripe, raw, year round average?
For consistent tracking of Tomatoes, red, ripe, raw, year round average, weigh it raw. Cooking method changes both weight and calorie density — steaming barely changes anything, but roasting with oil or frying can double the calories. A systematic review (Whitton et al., Adv Nutr 2022) found vegetables are omitted from food logs 2–85% of the time, often because people assume they are "free" calorically. While most vegetables are indeed low-calorie, the fats added during cooking are not. Log the oil, butter, or dressing separately to keep your tracking accurate.