Zucchini
Every 100 g of Zucchini contains 17 kcal and 1.2 g of protein. Because it has less than 5 g of available carbohydrate per 100 g, the glycemic index does not apply and its direct effect on blood sugar is minimal.
Medically reviewed by Dr. Wassim Habib · Last reviewed 12 October 2026
Glycemic index
Glycemic load
Calories
Protein
💡 Smart Nutritional Guidance
Consumption advice
Courgette is low in calories and versatile, suiting stuffed dishes and soups.
Best preparation methods
Grate it or cut it into thin ribbons as a partial substitute for pasta in some dishes.
Important Nutritional Note
This food does not need a glycemic index, but the foods eaten with it determine the meal’s effect on blood sugar.
Nutrition facts
| Nutrient | Per 100 g | Per typical portion (120 g) |
|---|---|---|
| Calories | 17 kcal | 20.4 kcal |
| Protein | 1.2 g | 1.4 g |
| Carbohydrate | 3.1 g | 3.7 g |
| Available carbohydrate | 2.1 g | 2.5 g |
| Fat | 0.3 g | 0.4 g |
| Dietary fibre | 1 g | 1.2 g |
The typical portion is approximate, for comparison purposes.
Comparison & smarter alternatives
It has 17 kcal per 100 g, ranking 2 of 9 in Vegetables (lowest first).
Other foods in this group:
Frequently asked questions
Is Zucchini good for weight loss?
Yes. Zucchini is very low in calories (17 kcal per 100 g), so you can eat a generous amount to add volume and fullness to a meal without many calories.
How does Zucchini affect blood sugar?
Zucchini contains only 2.1 g of available carbohydrate per 100 g, so the glycemic index does not apply and its direct effect on blood sugar is minimal. The meal’s effect depends on what you eat with it, such as bread, rice or sweetened sauces.
What is the nutritional value of a typical portion of Zucchini?
A typical 120 g portion of Zucchini provides about 20 kcal, 1.4 g protein, 3.7 g carbohydrate, 0.4 g fat and 1.2 g fibre.
Disclaimer: This guidance is for nutritional lifestyle orientation and does not constitute a diagnostic medical device under EU Regulation MDR 2017/745.