One medium avocado contains roughly 240 to 322 calories, depending on its exact size and how you measure it. Harvard’s School of Public Health puts a whole medium avocado at about 240 calories, while USDA data for a 201-gram fruit lists 322 calories. The difference comes down to what counts as “medium” and whether the weight includes the pit and skin. Either way, most of those calories come from fat, which is what makes avocado so filling and nutrient-dense.
Full Macronutrient Breakdown
A whole medium avocado provides about 22 grams of fat, 13 grams of carbohydrates, 3 grams of protein, and 10 grams of fiber. Fat is the dominant macronutrient by far, accounting for most of the calories. But the type of fat matters: 15 grams are monounsaturated (the same heart-friendly kind found in olive oil), 4 grams are polyunsaturated, and only 3 grams are saturated. Sodium is negligible at 11 milligrams.
That 10 grams of fiber is notable. It’s about a third of the daily recommended intake for most adults, and it means the net carbohydrate count (total carbs minus fiber) is only around 3 grams. This is why avocados fit comfortably into low-carb and keto eating patterns despite their calorie density.
Why the Calorie Range Varies
Avocados aren’t standardized like packaged food. A small Hass avocado might weigh 130 grams of edible flesh, while a larger one can easily hit 200 grams or more. The USDA’s 322-calorie figure uses a 201-gram whole fruit, which is on the bigger end of “medium.” If your avocado is closer to 150 grams of flesh, you’re likely in the 240-calorie range.
The variety also matters. Hass avocados, the dark, bumpy-skinned type that dominates grocery stores, are denser in fat and calories. Florida avocados (sometimes called Dominican avocados) are physically larger but contain less fat per gram, giving them a lower calorie count overall. If you’re buying the bright green, smooth-skinned variety at your store, it’s likely a Florida type with fewer calories than the numbers above suggest.
How Serving Size Changes the Math
Most people don’t eat a whole avocado in one sitting. If you’re slicing half onto toast or scooping a third into a salad, the calorie math shifts significantly. Half a medium avocado runs about 120 calories. A third brings it down to roughly 80 calories, which is close to what many nutrition labels use as a standard serving.
For context, half an avocado delivers about 345 milligrams of potassium, which is 7% of the daily value. Eat the whole fruit and you get close to 15% of your daily potassium, more than a medium banana provides.
Avocado Calories and Weight
At 240-plus calories, a whole avocado is calorie-dense compared to most fruits. A medium apple has about 95 calories, and a banana around 105. But calorie counts alone don’t tell you much about how a food affects your weight, and avocado is a good example of why.
Research on satiety shows that eating half an avocado at lunch is associated with feeling fuller and having less desire to eat for up to five hours afterward. The combination of fat and fiber slows digestion, which keeps blood sugar steadier and delays hunger signals. In a large randomized trial published in the Journal of the American Heart Association, people who added one avocado per day to their diet did eat about 117 more calories daily than a control group. But their body weight didn’t change significantly. The extra calories from avocado appeared to be offset, likely through reduced snacking or smaller portions later in the day.
That said, a separate study found that adding a daily avocado to a calorie-restricted weight loss diet didn’t boost fat loss either, despite participants reporting greater satiety. The takeaway: avocados are unlikely to cause weight gain on their own, but they’re also not a weight loss shortcut. They’re a calorie-dense food that happens to be very good at keeping you satisfied.
Calorie Comparison With Common Toppings
What you pair with avocado often adds more calories than the avocado itself. A slice of sourdough toast with half an avocado and a fried egg comes to roughly 350 calories total. Guacamole made from one avocado with lime, onion, and cilantro stays close to the base avocado calories. But add tortilla chips and you can easily double or triple the total. If you’re tracking intake, the avocado is rarely the item that tips the balance.