The calorie count in half an avocado depends on the type and size. California avocados have a dark-green, bumpy peel and are small enough to hold in the palm of your hand. Florida avocados are larger with a light-green, almost smooth skin. Although avocados are higher in calories than most fruits, they can still be part of a healthy diet when consumed in moderation.
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Although Florida avocados are the larger of the two types typically found in stores, they have fewer calories per gram. Half of a Florida avocado weighing 304 grams has roughly 180 calories. Half of a smaller, but richer, California avocado weighing 136 grams has about 113 calories.
Avocados are a high-calorie, high-fat food, but they offer 20 different vitamins, minerals and other nutrients. The mono- and polyunsaturated fats found in avocados make them a heart-healthy replacement for butter, margarine and other foods containing trans- and saturated fats. Avocados are also sodium- and cholesterol-free.