A typical serving of zucchini (1 medium zucchini, 196 g) has about 33 calories. Per 100 g: 17 kcal, 1.2 g protein, 3.1 g carbs, 0.3 g fat. The same 100 g carries 1 g of fiber and 2.5 g of sugar. In a daily log it contributes close to nothing.
| Serving | Weight | Calories |
|---|---|---|
| 1 medium zucchini | 196 g | 33 kcal |
| 1 small zucchini | 118 g | 20 kcal |
| 1 large zucchini | 323 g | 55 kcal |
| 100 g | 100 g | 17 kcal |
One of the lightest vegetables per bite, which is why it shows up in low-calorie pasta swaps. On the energy-density scale, 17 kcal per 100 g puts zucchini at the very low end. Protein density is strong: about 7.1 g of protein per 100 calories.
A typical serving (1 medium zucchini, 196 g) has about 33 calories, and 100 g has 17 kcal. Calories scale with weight, so double the portion means double the number.
There are 1.2 g of protein in 100 g of zucchini, which works out to about 2.4 g per serving (1 medium zucchini). Treat it as an energy source rather than a protein source.
There are 3.1 g of carbohydrate per 100 g of zucchini, or about 6 g in 1 medium zucchini (196 g).
Every value on this page comes from USDA FoodData Central, entry 169291 (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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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 169291 (SR Legacy). Serving calories are computed from the per-100-g values.
