One cup of cooked sweet corn packs about 143 calories, 31 g carbs, 3.6 g fiber, and 5 g protein, with helpful B vitamins and carotenoids.
Calories (Per Cup)
Fiber (Per Cup)
Protein (Per Cup)
100 g Raw Kernels
- 86 kcal
- 19 g carbs
- ~2.7 g fiber
Raw
1 Cup Cooked
- 143 kcal
- 31 g carbs
- ~6.8 g sugars
Cooked
Popcorn (3 Cups)
- ~100 kcal
- Whole grain
- Great volume
Snack
Why Corn On The American Table Matters
Sweet corn shows up at cookouts, weeknight bowls, and quick lunches. It tastes naturally sweet, sits well with kids, and brings helpful starch, fiber, and pigments. That mix gives you steady energy for a meal, a little plant protein, and eye friendly carotenoids.
U.S. Sweet Corn Nutrition Facts: What Changes By Serving
The way you measure corn swings the numbers. Kernels shrink when cooked, cobs vary by size, and cup measures can be heaping or level. Use the chart below as a clear baseline, then match it to your plate. The figures draw on cooked corn data that reflect current USDA listings.
| Serving | Calories | Carbs (g) |
|---|---|---|
| 100 g raw kernels | 86 | 19 |
| 1 ear boiled (no salt) ~90–100 g edible | 100–120 | ~22–25 |
| 1 cup cooked kernels | ~143 | 31 |
| 1 cup raw kernels | ~125 | 27 |
| Air-popped popcorn, 3 cups | ~100 | ~19 |
How Corn Compares With Other Starches
Corn lands in the middle of the starch spectrum. It carries more fiber than white rice, similar protein to boiled potatoes by weight, and fewer total carbs per cup than pasta. Popcorn sits in its own lane: the same plant, a different texture, and far more volume per calorie.
Carbs, Fiber, And Blood Sugar
Most of the energy in corn comes from starch. That is not a bad thing when you watch portions and pair it with protein or fat. The fiber slows the ride. A level cup of cooked kernels gives you a few grams of fiber, which takes a bite out of the glucose spike. Glycemic index testing places sweet corn in the medium range; match your portion to your goals and include protein and greens.
Protein, Fat, And Amino Balance
Corn does not shout “protein,” yet the fresh kernels still supply a steady trickle. A cup of cooked kernels gives you about five grams. That is a helpful base for a bowl that also holds beans, chicken, tofu, eggs, or cheese. Fat stays low unless you add butter or oil. If you want the most filling bite for the calories, add a lean protein and keep the fat as a topping, not a pour.
Vitamins You Actually Get From Corn
The B family shows up here: thiamin and folate in real amounts, plus small hits of niacin and B6. Those tie into energy metabolism and red blood cell formation. You also pick up vitamin C in raw kernels and some vitamin A activity from yellow pigments. Cooking softens kernels and shifts vitamin levels a little, but the takeaway is steady: you get a mix of Bs and a modest boost of C and A precursors.
Minerals Worth Calling Out
Potassium, magnesium, and phosphorus are the headliners. A full cup of cooked kernels supplies a bit of each, with phosphorus running higher than many other vegetables. Sodium stays naturally low unless you brine or salt the cooking water. Iron is present in small amounts. None of this turns corn into a “superfood,” but it rounds out a plate in a useful way.
About Lutein And Zeaxanthin In Yellow Corn
Those golden kernels are not just color. They carry lutein and zeaxanthin, two carotenoids linked with macular pigment density. Studies show both appear in corn, and you absorb them better with a little dietary fat in the same meal, like olive oil, avocado, or grated cheese.
Raw, Frozen, Canned, Or On The Cob?
All four work. Raw kernels bring crunch to salads and salsas. Frozen bags are budget friendly and picked near harvest, which locks in the profile. Canned corn is convenient; drain and rinse to drop the sodium. On-the-cob versions are perfect for grills and quick pots. If you are counting, keep an eye on butter, mayo, and cheese dusts, since those push calories far faster than the vegetable itself.
U.S. Sweet Corn Nutrition Guide: Serving-By-Serving Tips
Air-popped popcorn is simply heated kernels that blew open. You get a light, crunchy bowl with standout volume. A big serving can stay near one hundred calories before toppings. It brings whole grain fiber and polyphenols, which helps with fullness. Oil popping and heavy coatings change the math, so season with a light hand if you want the lower calorie win.
Smart Portions For Common Meals
- Burrito bowl: half a cup of kernels adds starch without crowding out beans or greens.
- Soup or chowder: one third cup per serving keeps texture without turning the bowl into porridge.
- Salad: a quarter to a third cup gives color, mild sweetness, and a little bite.
- Side dish: one cup works when the main is light; go smaller next to pasta or rice.
Cooking Methods That Keep Nutrition Intact
Boil or steam until just tender. Overcooking splits skins and leaches out water-soluble vitamins. Roasting on a sheet pan adds browning without extra water loss; keep oil minimal. Grilling on the cob adds smoky notes; brush with a thin layer of oil to hold spices. Microwave bags are fast and keep nutrients in the kernels. The theme is simple: cook to tender-crisp and season after.
Add-On Ingredients That Play Nice
- Fats that help carotenoid uptake: extra-virgin olive oil, avocado, feta, a small butter pat.
- Bright acids for balance: lime, lemon, cider vinegar.
- Fresh herbs: cilantro, basil, chives.
- Heat: chile powder, smoked paprika, jalapeño.
- Crunch: scallions, radish, toasted pumpkin seeds.
Allergy And Intolerance Notes
True corn allergy is uncommon but real. Reactions range from hives to breathing issues. People with pollen-food syndrome can also tingle when they eat raw kernels. If that sounds familiar, try cooked forms and talk with a clinician. For celiac disease, pure corn is gluten-free. Packaged items can include wheat based seasonings, so read labels when you buy soups, mixes, and snack blends.
Weight And Fullness Questions
Corn can fit in a weight loss plan when you watch portions. Compare a cup of cooked kernels with a full bag of chips and the difference shows up fast. The fiber and water bring volume, which helps you stop at a reasonable amount. Popcorn raises that effect even more because each handful weighs so little. Season smart and measure oil with a spoon, not an open pour.
How Corn Fits A Balanced Plate
Think of corn as the starch slot. Then add a palm of protein and a thumb of healthy fat. Fill the rest of the plate with non-starchy vegetables. That simple template works for taco nights, picnic plates, and skillet dinners. When fruit is the dessert, you have a colorful spread that covers fiber, protein, and a range of micronutrients without heavy math.
Blood Sugar Tips For Corn Lovers
Stick to level cup measures rather than eyeballing heaps. Pair kernels with eggs at breakfast, with beans at lunch, and with grilled fish or tofu at dinner. Add a salad or roasted greens beside it so the meal has more color and bulk. If you track glucose, try the same meal on two days with and without extra butter or oil and see how the curve changes.
Reading Labels On Packaged Corn Foods
Tortillas, chips, cornbread mixes, and canned creamed corn all read differently. Scan for the grain type, oil, and sodium. Whole grain tortillas give you more fiber. Chips run up calories fast when fried in blends you do not recognize. Bread mixes often carry added sugar and refined flours. Canned creamed corn varies widely in salt; the simple cans stick closer to plain kernels.
Simple Ways To Add Corn That Feel Fresh
- Toss warm kernels with cherry tomatoes, cucumber, and lime.
- Make a skillet hash with onions, peppers, and a fried egg.
- Stir into black bean soup with cumin and a squeeze of orange.
- Build a corn, feta, and basil salad for picnics.
- Mix into tuna salad with celery and pickled jalapeños.
| Nutrient | Amount | %DV |
|---|---|---|
| Potassium | ~390 mg | ~8% |
| Phosphorus | ~130 mg | ~10% |
| Magnesium | ~46 mg | ~11% |
| Folate | ~60 mcg DFE | ~15% |
| Thiamin (B1) | ~0.16 mg | ~13% |
| Vitamin C | ~10 mg | ~11% |
| Lutein + Zeaxanthin | present | — |
Popcorn Seasoning Ideas That Do Not Break The Bank
Start with air-popped bowls. Mist lightly with oil or melted butter if you like, then dust with spice blends. Try chili-lime salt, cinnamon and a shake of sugar, garlic powder with parsley, or grated Parmesan. The idea is flavor without turning the bowl into a fat delivery system.
Sensible Storage And Food Safety
Keep fresh cobs in the fridge and use within a few days for the sweetest taste. Frozen bags keep quality for months when sealed tight. Do not leave cooked kernels at room temp for long; chill leftovers within two hours. Reheat to steam hot. If an opened can smells off, toss it.
When Corn Is Not The Best Pick
During strict low carbohydrate phases, you might swap corn for leafy greens or zucchini ribbons. People who need a low sodium plan should choose no-salt-added canned forms or stick to frozen bags. Those who react to raw kernels can switch to cooked versions or try popcorn, which tends to sit better.
A Quick Word On Price And Access
Fresh cobs peak in late summer, yet frozen and canned forms keep this food on shelves all year. Store brands use the same fields as big names. Watch for sales and keep a bag in the freezer so taco night and last minute soups come together fast.
The Bottom Line For Home Cooks
Corn is a friendly starch with fiber, B vitamins, pigments that support the eyes, and an easy flavor that fits tons of plates. Match portions to your needs, pick a cooking method that keeps texture, and season with bright acids and a little fat. When you want a snack with volume, air-popped popcorn delivers.