Raw broccoli has about 34 calories per 100 grams, while plain steamed or boiled broccoli has about 28 to 35. One cup of either form usually has about 30 to 35 calories, though added oil, butter, and sauces can change that total.
This comparison covers serving weight, cooking losses, stir-fried portions, and practical tracking methods so you can select a reliable number for your meal.
Raw Broccoli Calorie Baseline
A 100-gram portion of raw broccoli contains about 34 calories after you trim the stem and discard inedible parts. This weight provides a practical baseline for comparing raw broccoli with steamed, boiled, and stir-fried forms.
You need to distinguish weight from volume. A cup of chopped broccoli may weigh about 85 to 100 grams, depending on how tightly the pieces are packed and how much tender stem remains. That difference explains why nutrition databases may report different values for one cup.
- Use grams first: A 100-gram raw portion gives you a consistent starting point for comparing preparations.
- Measure trimmed weight: Count the florets and tender stem pieces that you plan to eat.
- Check the cup: Packing affects serving size, so a level kitchen cup and a heaping cup do not weigh the same.
- Track additions separately: Broccoli served with dip contains more calories than plain raw broccoli.
For meal planning, you can use 30 to 35 calories for one cup of chopped raw broccoli. Your scale removes much of the uncertainty, especially in a bowl, salad, or mixed dish where the quantity changes from meal to meal.
Steamed, Boiled, And Raw Compared
Plain steaming and boiling do not add energy to broccoli. Raw and cooked forms remain close when compared by equal weight, with modest differences caused by moisture, broccoli variety, maturity, and the preparation label used in a nutrition database.
| Preparation | Calories per 100 grams | Calories per 1 cup |
|---|---|---|
| Raw, chopped | About 34 | About 30 to 35 |
| Plain steamed | About 28 to 35 | About 30 to 35 |
| Plain boiled, drained | About 28 to 35 | About 30 to 35 |
| Stir-fried with oil | Plain broccoli plus added oil | Plain broccoli plus oil |
These figures leave the basic raw-versus-cooked question clear: neither form has a meaningful calorie advantage. Heating alters the water content and texture of broccoli, but it does not add calories to the vegetable itself.
At 100 grams, raw broccoli has about 34 calories, while a plain steamed database entry may show 31 or 35. Your cup or bowl can contain any of these values because its measured weight determines the total.
Why Serving Weights Change
A raw cup and a cooked cup may look similar while containing different amounts of vegetable. Steaming or boiling removes water from the florets, so the same volume may hold fewer grams of broccoli after cooking.
That water loss can make the remaining broccoli appear more calorie-dense by weight. Cooking does not create calories. The serving contains less water and less total food, so each 100 grams that remain has a slightly higher concentration of energy.
| Measurement point | Example amount | Approximate calories |
|---|---|---|
| Raw broccoli before cooking | 100 g | 34 |
| Cooked broccoli after steaming | 85 to 90 g | 24 to 32 |
| Cooked portion weighed after draining | 100 g | 28 to 35 |
Suppose you steam 150 grams of raw broccoli. The cooked portion may weigh about 125 to 135 grams, yet the plate can still contain roughly 51 calories from the original broccoli. You lost water during cooking, not the calories supplied by the vegetable.
You can calculate the value of the cooked serving by multiplying its calories per 100 grams by its weight in grams, then dividing by 100. This method keeps your food log connected to the amount actually on your plate.
Oil, Sauce, And Stir-Fried Broccoli
One tablespoon of oil contributes about 120 calories. That amount can exceed the calories in several servings of plain broccoli, which makes oil the main tracking issue in a stir-fry.
- Plain broccoli cup: One cup contains about 30 to 35 calories.
- Oil tablespoon: One tablespoon contributes about 120 calories.
- Soy-based sauce: A tablespoon varies by product, particularly its sugar content.
- Restaurant stir-fry: Oil, sauce, garlic, and other ingredients can bring the total above 300 calories.
Butter changes the total too, although its calorie density and flavor differ from oil. A teaspoon of butter adds about 34 calories, while a tablespoon contributes roughly 100. Creamy sauces also supply fat, sugar, and sometimes starch, so weighing only the broccoli gives you a misleading total.
Measure oil before it enters the pan for accurate tracking. After cooking, weigh the entire prepared portion and divide the total recipe calories by the cooked weight.
Cronometer and MyFitnessPal can record a homemade stir-fry, but a measured-ingredient entry gives you a more accurate basis. Entering “100 grams broccoli” while ignoring two teaspoons of oil undercounts the dish by about 80 calories.
Converting Portions For Calorie Tracking
Weight gives you the strongest basis for conversion, while volume serves as a quick estimate. For plain broccoli, you can begin with about 30 to 35 calories per cup, then use your scale when the serving affects your food log.
- Weigh the raw portion: Place trimmed broccoli on your scale and record its weight in grams.
- Match the entry: Choose raw, steamed, boiled, drained, or prepared according to the food on your plate.
- Account for water loss: Compare cooked weight with raw weight rather than comparing cup volumes.
- Measure every fat: Record oil, butter, dressing, and sauce separately.
- Divide the recipe: Multiply total recipe calories by the fraction of the finished dish you serve.
Use this formula: calories per 100 grams × serving weight in grams ÷ 100. A 120-gram cooked serving at 32 calories per 100 grams supplies about 38 calories, so the result reflects the actual portion.
To estimate the raw equivalent of a cooked serving, weigh a raw portion that looks similar after cooking. Your scale provides a stronger result than a cup conversion, especially with thick stems, chopped pieces, or loosely packed florets.
Choosing The Best Preparation
Steaming adds no calories and requires little or no fat. Short exposure to heat also limits nutrient losses, helping broccoli retain more vitamin C and some B vitamins than prolonged boiling.
Boiling also leaves the calorie total low because the cooking water supplies almost none. Your drained serving retains the plain broccoli value, while oil or sauce changes the dish total as soon as you add it.
You can check preparation details in the U.S. Department of Agriculture’s FoodData Central database. Packaged-food labels from the Food and Drug Administration can also describe frozen or prepared broccoli, so check for raw, cooked, drained, or added-ingredient terms before entering the value.
Raw broccoli fits salads and snacks, while steaming produces a crisp texture and boiling works well as a drained side dish. For weight loss from cooking, your plainest option keeps the vegetable’s calorie total near 30 to 35 per cup, while measured fats give you control over added calories.
Bottom Line
Your strongest estimate begins with a 100-gram weight rather than a cup. Raw and plain cooked broccoli each supply roughly 30 to 35 calories per cup, and cooking mainly removes water. Measure oil, butter, and sauce, then use the label or database entry that matches your actual preparation.
FAQ
How many calories are in 100 grams of raw broccoli?
At 34 calories per 100 grams, raw broccoli is a low-calorie vegetable. You get a more accurate total by weighing the florets and tender stem after removing inedible parts.
How many calories are in 100 grams of cooked broccoli?
A 100-gram serving of plain steamed or boiled broccoli provides about 28 to 35 calories. Added oil, butter, and sauce raise the total.
Does cooking broccoli increase or decrease its calories?
Plain cooking does not add calories. Heating can reduce water content, so the remaining vegetable may look more calorie-dense by weight even though the original calorie amount remains largely unchanged.
How many calories are in one cup of raw or cooked broccoli?
A one-cup serving of chopped raw or plain cooked broccoli contains roughly 30 to 35 calories. Your exact total depends on the measured weight, chopped size, stem content, and packing.
Why does cooked broccoli appear to have more calories per serving?
Cooking removes water, which reduces the serving’s total weight. The remaining broccoli therefore has a slightly higher calorie concentration per 100 grams, although plain cooking does not create new calories.
Which cooking method adds the fewest calories?
Steaming or boiling with water adds the fewest calories. You can keep the vegetable’s value near 30 to 35 calories per cup by using no oil, butter, or calorie-bearing sauce.
