A typical serving of green beans (1 cup, 100 g) has about 31 calories. Per 100 g: 31 kcal, 1.8 g protein, 7 g carbs, 0.2 g fat. The same 100 g carries 2.7 g of fiber and 3.3 g of sugar. Most of the energy comes from carbohydrate.
| Serving | Weight | Calories |
|---|---|---|
| 1 cup | 100 g | 31 kcal |
| 10 beans | 55 g | 17 kcal |
| 100 g | 100 g | 31 kcal |
A cup of raw green beans is about 31 calories with 2.7 g of fiber. On the energy-density scale, 31 kcal per 100 g puts green beans at the very low end. Protein density is strong: about 5.8 g of protein per 100 calories.

A typical serving (1 cup, 100 g) has about 31 calories, and 100 g has 31 kcal. Calories scale with weight, so double the portion means double the number.
There are 1.8 g of protein in 100 g of green beans, which works out to about 1.8 g per serving (1 cup). Treat it as an energy source rather than a protein source.
There are 7 g of carbohydrate per 100 g of green beans, or about 7 g in 1 cup (100 g).
Every value on this page comes from USDA FoodData Central, entry 169961 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Nutrition data: USDA FoodData Central, FDC ID 169961 (SR Legacy). Serving calories are computed from the per-100-g values.