A medium ear of boiled corn on the cob usually has about 75–100 calories, depending on size, cooking method, and added butter or oil.
Corn on the cob shows up at cookouts, weeknight dinners, and holiday tables. When you track calories, that ear of corn on your plate suddenly matters a lot. You want the sweetness and crunch, but you also want your numbers to stay on track.
The good news is that plain corn on the cob is not a calorie bomb. Most ears land in the same rough range as a slice of bread or a small baked potato, especially when you skip heavy sauces. The real swing comes from size, cooking method, and extras like butter, oil, and cheese.
This article walks through calorie ranges for different ears of corn, how toppings change the math, and simple ways to fit corn into weight loss, maintenance, or muscle gain plans. You will see real numbers, not guesses, so you can build meals that match your goals.
How Many Calories Does Corn On The Cob Have Per Ear?
Nutrition databases that draw from USDA data show that 100 grams of boiled yellow corn has around 96 calories, with most of that energy coming from starch and natural sugars. A medium ear of corn on the cob usually weighs close to that amount once cooked, which lines up with calorie ranges seen in trusted nutrition summaries.
One medium ear (about 6¾–7½ inches long) is often listed at around 80–90 calories when boiled without salt or fat. Some extension services list a similar ear closer to the mid-70s for calories, which reflects lighter ears and small differences in kernel density. In practice, a plain medium ear usually sits in the 75–100 calorie window.
Smaller ears drop under that range. A small ear can come in near 60–70 calories. Large ears, especially big sweet-corn varieties, can move past 100 calories even before toppings. That is why thinking in ranges instead of one “magic” number works better when you plan meals.
Once you add butter, oil, cheese, or mayonnaise-based spreads, calories climb quickly. A teaspoon of butter adds about 35 calories. A tablespoon adds around 100, and that is before any extra oil brushed on for grilling. Knowing the plain corn number gives you a base; then you layer toppings on top of that.
Typical Corn On The Cob Calorie Ranges
The table below brings those ranges together so you can scan them at a glance. These values assume yellow sweet corn that is boiled or grilled and drained, without breading or heavy sauces unless stated.
| Corn Serving | Approximate Calories | Notes |
|---|---|---|
| Small ear, plain (about 5–6 in) | 60–70 kcal | Light ears with fewer kernels. |
| Medium ear, plain (about 6¾–7½ in) | 75–90 kcal | Based on common USDA-linked nutrition tables. |
| Large ear, plain (over 8 in) | 100–120 kcal | Heavier ears with more dense kernels. |
| 1 cup boiled kernels, off the cob | 170–180 kcal | Similar to a heaping serving shaved from 1–2 ears. |
| Medium ear + 1 tsp butter | 110–125 kcal | Plain ear plus thin butter layer. |
| Medium ear + 1 Tbsp butter | 170–190 kcal | Common at cookouts when butter is spread thick. |
| Street-style ear with mayo & cheese | 220–280 kcal | Varies widely with sauce and cheese portions. |
None of these servings are huge calorie bombs on their own. The question is how many ears you eat, what else is on your plate, and how heavy your topping hand gets.
What Changes Corn On The Cob Calories?
Calories in corn on the cob do not come only from the corn itself. Cooking method, toppings, and even whether you buy fresh, frozen, or canned corn all change the final number you see in your tracking app.
Cooking Method And Water Loss
Boiling corn on the cob keeps calories stable while softening kernels. The corn takes on water, so the calorie count per gram can dip slightly, even though total calories per ear stay about the same. Steaming has a similar effect.
Grilling or roasting can dry kernels a bit, which makes the ear taste sweeter and more intense. The actual calorie count per ear barely shifts, but the flavor may tempt you to eat more ears or add more butter. Oil brushed on before grilling counts too, so a “light drizzle” can add 40–80 extra calories if you are not measuring.
Toppings, Spreads, And Sauces
This is the big swing factor. Butter, margarine, mayonnaise, oil-based spreads, cheese, and sugar-heavy sauces can double or even triple total calories compared with a plain ear. Even herb butter or flavored oils that look light on the surface often hide more fat than you expect.
A thin smear of butter, about a teaspoon, adds roughly 35 calories. A tablespoon of mayonnaise can add 90–100 calories. Grated cheese sticks to hot kernels and adds fat and sodium along with flavor. None of these foods are “off limits,” but they turn a modest 80-calorie ear into something much richer.
Fresh, Frozen, Or Canned Corn
Plain fresh sweet corn on the cob, frozen corn that you cook on the cob, and canned corn kernels all share a similar calorie profile once you match serving sizes. One nutrition overview that pulls from USDA data lists 100 grams of boiled yellow corn at around 96 calories, with about 21 grams of carbohydrate, 3–4 grams of protein, and under 2 grams of fat.
Additions change that picture. Frozen corn with butter sauce, canned corn with sugar or cream, and seasoned microwave packs bring extra calories, sodium, and fat. When you want numbers close to the plain corn rows in the table above, choose simple versions and add your own light seasoning at home.
Corn On The Cob Nutrition Beyond Calories
Calories are only one piece of the story. Corn on the cob also brings starch, fiber, small amounts of protein, and a mix of vitamins and minerals. That is why many dietitians treat corn as a starchy vegetable that can stand in for rice, pasta, or bread in a meal.
According to Healthline’s corn nutrition overview, 100 grams of boiled yellow corn provides around 96 calories, about 21 grams of carbohydrate, 2–3 grams of fiber, 3–4 grams of protein, and a small amount of fat, along with vitamins C and B-group vitamins. This matches data drawn from USDA nutrient tables.
The USDA SNAP-Ed corn seasonal produce guide lists corn as a summer vegetable that works fresh, frozen, or canned and points out that it can be boiled, roasted, baked, or grilled. Corn brings potassium and small amounts of other minerals along with its starch and fiber, which helps round out a plate when paired with lean protein and non-starchy vegetables.
A separate nutrition summary on Verywell Fit notes that one medium ear of corn on the cob offers a few grams of protein and roughly 2 grams of fiber. That fiber helps you feel fuller and slows how fast the starch hits your blood stream. State extension services, such as the North Carolina Cooperative Extension sweet corn facts page, describe similar nutrient patterns and place a medium ear near the mid-70s for calories.
How Corn Fits Into A Balanced Plate
Because corn on the cob is starchy, it usually takes the place of bread, pasta, rice, or potatoes on a plate rather than sitting on top of those foods. A balanced dinner might pair one medium ear of corn with grilled chicken and a large serving of non-starchy vegetables like salad greens or steamed broccoli.
If you eat two or three ears, you will want to shrink other starches in the same meal. Swapping out a dinner roll or a scoop of rice for an extra ear keeps total carbohydrates and calories in a similar range.
Portion Tips For Different Eating Goals
People use corn on the cob in many ways: some are watching their waistline, some need steady energy for training, and others need to watch blood sugar swings. Smart portions let you keep corn on your plate in all of these cases.
Weight Loss Or Weight Maintenance
When you are trying to lose or maintain weight, a common approach is to keep starchy foods in check while filling the rest of the plate with lean protein and vegetables. In that setup, one medium ear of corn can replace a small baked potato or a slice or two of bread. Keep toppings light: a small pat of butter or a sprinkle of grated cheese instead of heavy drizzles or thick mayonnaise sauces.
You can also shave kernels from the cob and mix them into salads with tomatoes, cucumbers, beans, and herbs. That spreads the sweetness through the bowl, so each bite feels satisfying even though the total amount of corn is modest.
High-Energy Or Muscle Gain Plans
People who lift weights or train for endurance sports often need more calories and carbohydrates. In that context, two ears of corn beside a source of protein can work well. The combination of starch, small amounts of protein, and fiber helps refill glycogen stores without the heaviness some people feel after big pasta portions.
If you fall into this group, you may not need to be as strict with toppings. Olive oil, butter, or avocado-based spreads add calories that you actually need, though it still helps to know the numbers so you can match intake to your training load.
Blood Sugar Awareness
For people living with diabetes or prediabetes, corn on the cob is usually counted as a carbohydrate choice in a meal plan. That means a medium ear might stand in for roughly one to one and a half carb “servings” depending on the system used.
Pairing corn with lean protein, healthy fats, and non-starchy vegetables helps steady blood sugar after a meal. Shaving corn off the cob and mixing it with black beans and vegetables, for example, spreads the starch through a mix of fiber and protein so each mouthful is more balanced.
Calories From Popular Corn On The Cob Toppings
Toppings often matter more than the corn itself when you tally total calories. The table below lists common extras and the calories they bring to a single ear.
| Topping Or Add-In | Typical Portion On One Ear | Approximate Added Calories |
|---|---|---|
| Butter | 1 tsp spread thinly | 35 kcal |
| Butter | 1 Tbsp spread thickly | 100 kcal |
| Mayonnaise | 1 Tbsp brushed on | 90–100 kcal |
| Grated hard cheese | 2 Tbsp sprinkled | 40–60 kcal |
| Olive oil | 1 tsp brushed on | 40 kcal |
| Light margarine spread | 1 Tbsp | 50–60 kcal |
| Lime juice, chili, herbs | Generous shake | Negligible |
These topping numbers stack on top of the base 75–100 calories in a medium ear. That means a butter-heavy ear can easily hit 180–200 calories, while a chili-lime ear with herbs stays much closer to the plain version.
Ways To Enjoy Corn On The Cob While Watching Calories
You do not need to skip corn on the cob to keep calories reasonable. A few small shifts in how you prep and serve it make a big difference without draining the fun out of a cookout or family meal.
Lighter Cooking And Seasoning Ideas
Try boiling or steaming corn, then finishing it under a broiler or on a grill pan for a short time to add char marks without soaking it in oil. Brush ears with a mix of lime juice, a teaspoon of oil, and spices instead of straight butter. Spice blends with smoked paprika, garlic powder, or chili work well and add flavor without many extra calories.
Cheese lovers can grate a hard cheese like Parmesan over hot corn and skip thicker creamy sauces. A little goes a long way because the flavor is concentrated. Fresh herbs such as cilantro, parsley, or chives give color and a fresh aroma with minimal calories.
Balancing Your Plate
Think of corn on the cob as one element on a plate rather than the whole story. One ear with grilled fish and a large salad lands in a very different calorie range than three ears with creamy coleslaw and sugary drinks. Building meals around lean protein, vegetables, and a moderate portion of starch keeps corn in a comfortable place.
When you attend a cookout, an easy rule is to stick to one ear with toppings you enjoy and fill the rest of your plate with vegetables and protein. If you want a second ear, go light on toppings for that one and skip other starchy sides like chips or potato salad.
Main Takeaways About Corn On The Cob Calories
A plain medium ear of corn on the cob usually falls in the 75–100 calorie range. That makes it similar to many other starchy sides and far lighter than many desserts or fried snacks that show up at the same meals.
The biggest calorie changes come from ear size and toppings. Butter, mayonnaise, oil, and cheese can double or triple the total, while lime juice, herbs, and spices barely move the needle. Knowing those ranges lets you mix and match so each plate fits your goals.
If you treat corn on the cob as your main starch, pair it with lean protein and non-starchy vegetables, and stay mindful of toppings, it can fit comfortably into many eating styles. Instead of guessing, you now have clear numbers and ranges you can plug into your own eating plan.
References & Sources
- Healthline.“Corn 101: Nutrition Facts and Health Benefits.”Summarizes calories, macronutrients, and key vitamins in boiled yellow corn using USDA-based data.
- Verywell Fit.“Corn Nutrition Facts and Health Benefits.”Provides calorie and macro estimates for a medium ear of corn on the cob.
- USDA SNAP-Ed.“Corn – Seasonal Produce Guide.”Describes forms of corn, basic nutrition, and cooking methods for fresh, frozen, and canned corn.
- North Carolina Cooperative Extension.“Sweet Corn – Nutrition Facts.”Gives calorie and nutrient ranges for a medium ear of sweet corn along with practical serving advice.
