Roasted chestnuts have just 2.2 g fat and 245 kcal per 100 g. Unlike other nuts, chestnuts are mostly carbohydrate (53 g per 100 g) and function more like a starchy food. Their 5.1 g fiber per 100 g provides a modest caloric discount. A single chestnut weighs 8–12 g — weigh a few to learn the average.
How should I track Chestnuts, roasted?
Chestnuts, roasted is a good source of fiber. Nuts like Chestnuts, roasted are one of the easiest foods to overeat. Research on portion estimation (Almiron-Roig et al., Appetite 2013) found that people underestimate calorie-dense foods by 50–200% when eyeballing portions. A small handful can easily be 300+ calories. The best habit: pre-portion into 30 g bags or use a scale each time. Also check whether your nuts are raw, roasted, or roasted-in-oil — the roasted-in-oil versions add extra fat that is not in the raw nutrition values.