A typical serving of corn (1 ear small, 89 g) has about 85 calories. Per 100 g: 96 kcal, 3.4 g protein, 21 g carbs, 1.5 g fat. The same 100 g carries 2.4 g of fiber and 4.5 g of sugar. Most of the energy comes from carbohydrate.
| Serving | Weight | Calories |
|---|---|---|
| 1 ear small | 89 g | 85 kcal |
| 1 baby ear | 8 g | 8 kcal |
| 1 ear medium | 103 g | 99 kcal |
| 1 ear large | 118 g | 113 kcal |
| 100 g | 100 g | 96 kcal |
Starchy for a vegetable: one medium ear of sweet corn is just under 100 calories before butter. On the energy-density scale, 96 kcal per 100 g puts corn at the low end.

A typical serving (1 ear small, 89 g) has about 85 calories, and 100 g has 96 kcal. Calories scale with weight, so double the portion means double the number.
There are 3.4 g of protein in 100 g of corn, which works out to about 3 g per serving (1 ear small). Treat it as an energy source rather than a protein source.
There are 21 g of carbohydrate per 100 g of corn, or about 19 g in 1 ear small (89 g).
Every value on this page comes from USDA FoodData Central, entry 169999 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
Snap a photo of your plate in Joules and the calories and macros for corn are logged for you.
Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 169999 (SR Legacy). Serving calories are computed from the per-100-g values.