A single medium ear of corn on the cob has about 90 calories when you eat it plain. That number changes based on size and what you add to it. Butter, salt, and other toppings are where the calories add up quickly, not the corn itself.
How Many Calories Are in a Corn on the Cob?
A medium ear of sweet corn (about 6.5 to 7 inches long) contains roughly 90 calories. This count applies to the kernels you actually eat, not the cob itself.
The size of the ear matters. A small ear may have around 70 calories. A large ear can reach 120 calories or more. If you are tracking your intake, weigh the kernels after cooking for the most accurate count.
Does Cooking Method Change the Calorie Count?
Boiling, grilling, roasting, or steaming corn does not change its calorie content. Heat does not add or remove calories from the kernels themselves.
What changes the count is what you put on the corn after cooking. A pat of butter adds about 35 calories. A tablespoon of butter adds roughly 100 calories. Mayonnaise-based spreads or creamy sauces can add 50 to 150 calories per serving.
What Nutrients Are in Corn on the Cob?
Corn is a starchy vegetable, not a leafy green. A medium ear provides about 3 grams of fiber and 3 grams of protein. It contains small amounts of B vitamins, magnesium, and potassium.
Corn is also a source of lutein and zeaxanthin. These are antioxidants that concentrate in the retina of the eye. Some research suggests they may help protect against age-related vision loss, though the evidence is not conclusive.
The glycemic index of corn is moderate. That means it can raise blood sugar more quickly than non-starchy vegetables like broccoli or spinach. If you have diabetes or prediabetes, portion size matters more than avoiding corn entirely.
Is Corn on the Cob Healthy or Just Empty Carbs?
Corn is not empty carbs. It provides fiber, protein, and micronutrients in a package that most people find satisfying.
One medium ear contains roughly 20 grams of carbohydrates. About 3 grams of that is fiber, which slows digestion and helps with fullness. The rest is mostly starch and natural sugars.
Compared to refined grains like white bread or sugary snacks, corn on the cob is a better choice. It is a whole food with no added sugar or processing. The fiber and water content make it more filling per calorie than many refined carbohydrates.
That said, corn is more calorie-dense than non-starchy vegetables. A cup of broccoli has about 30 calories. A cup of corn kernels has about 130 calories. Corn can fit into a balanced diet, but it should not replace lower-calorie vegetables at every meal.
How Many Calories Are in Corn Toppings?
Plain corn is low in calories. The toppings are where the numbers climb.
- 1 teaspoon butter: about 35 calories
- 1 tablespoon butter: about 100 calories
- 1 tablespoon olive oil: about 120 calories
- 1 tablespoon mayonnaise: about 90 calories
- 1 teaspoon salt: 0 calories
- 1 teaspoon chili powder or paprika: about 5 calories
- 1 tablespoon grated parmesan: about 20 calories
A medium ear of corn with one tablespoon of butter jumps from 90 calories to roughly 190 calories. Two tablespoons of butter push it past 280 calories. That is comparable to a small candy bar.
If you want flavor without the calories, try lime juice, chili powder, garlic powder, or fresh herbs. These add minimal calories and can be just as satisfying as butter for many people.
Does Corn on the Cob Fit Into a Weight Loss Diet?
Yes, corn on the cob can fit into a weight loss diet. The key is portion control and mindful toppings.
One medium ear of plain corn is about 90 calories. That is a reasonable snack or side dish. It provides fiber and protein, which help with satiety compared to many other snacks of similar calorie content.
The problem is rarely the corn itself. It is the butter, salt, and creamy sauces that turn a 90-calorie side into a 300-calorie indulgence. If you are eating corn for weight loss, skip the butter or use a light spray instead.
Another consideration is how corn fits into your overall plate. A balanced meal might include a palm-sized portion of protein, a generous serving of non-starchy vegetables, and corn as the starchy side. This structure keeps calories in check while still allowing you to enjoy seasonal corn.
Is Corn on the Cob High in Sugar?
A medium ear of sweet corn contains about 6 grams of natural sugar. That is less than an apple, which has about 19 grams, and far less than a can of soda, which has about 39 grams.
The sugar in corn is naturally occurring, not added. It comes with fiber, water, and other nutrients that slow its absorption. Added sugars in processed foods do not come with those benefits.
Sweet corn varieties are bred to be sweeter than field corn. Even so, the sugar content is modest compared to most fruits and sugary beverages. For most people, corn on the cob is not a high-sugar food.
How Many Calories in Canned or Frozen Corn?
Canned and frozen corn have similar calorie counts to fresh corn. A half-cup of canned corn kernels has about 60 to 70 calories. The same amount of frozen corn has roughly the same.
Check the label on canned corn. Some brands add sugar or salt during processing. Creamed corn is significantly higher in calories because it contains added cream or starch. A half-cup of creamed corn can have 130 calories or more.
Frozen corn is usually just corn, with no additives. It is a convenient option that retains most of the nutrients found in fresh corn. The calorie difference between fresh, frozen, and plain canned corn is minimal.
Does the Color of Corn Matter for Calories?
Yellow and white corn have nearly identical calorie counts. The color difference comes from pigments called carotenoids, not from different macronutrient profiles.
Yellow corn contains more beta-carotene, which your body can convert to vitamin A. White corn has less of this pigment. Blue and purple corn varieties contain anthocyanins, which are also antioxidants.
These color differences affect nutrient content slightly but not calories. A medium ear of any color corn will be around 90 calories.
Frequently Asked Questions
How many calories are in a small corn on the cob?
A small ear of corn has about 70 calories. The exact number depends on the length and kernel density of the ear.
How many calories are in corn on the cob with butter?
One medium ear of corn with one tablespoon of butter has about 190 calories. The butter adds roughly 100 calories to the 90-calorie ear of corn.
Is corn on the cob fattening?
Plain corn on the cob is not fattening when eaten in reasonable portions. Butter, oil, and creamy sauces are what add significant calories.
Can I eat corn on the cob on a low-carb diet?
A medium ear of corn has about 20 grams of carbohydrates, which may be too high for strict low-carb diets. It can fit into moderate carb plans if you account for the carbs elsewhere in your meal.
