How Many Calories for Courgette?
1 medium courgette (~200g) of courgette contains around 40 calories (20 kcal per 100g). Courgette is classified as NOVA 1 (unprocessed).
Calories by preparation
| Method | Calories | NOVA |
|---|---|---|
| Raw (1 medium ~200g)Very low calorie — 95% water | 40 | 1 |
| Grilled/steamed (150g)Minimal calorie change from cooking | 25 | 1 |
| Fried in oil (150g)Oil triples the calories | 90 | 1 |
Nutrition per 100g
| Nutrient | Per 100g | Per serving |
|---|---|---|
| Energy | 20 kcal / 83 kJ | 40 kcal |
| Protein | 1.8g | 3.6g |
| Carbohydrates | 1.8g | 3.6g |
| of which sugars | 1.7g | — |
| Fat | 0.4g | 0.8g |
| of which saturated | 0.1g | — |
| Fibre | 0.9g | — |
| Salt | 0.01g | — |
Serving size: 1 medium courgette (~200g) · Source: Tesco product page, October 2025
Glucose impact
Very Low
Glucose risk
Zucchini contains only 1.8g of carbohydrates per 100g, of which 1.7g is natural sugars. Its glycaemic index is negligible — so low it is effectively unmeasurable in standard GI testing because you would need to eat an impractical quantity to reach the 50g carbohydrate threshold used in GI testing. It has virtually no impact on blood glucose levels.
Processing level
A fresh whole courgette is an unprocessed single-ingredient food — just courgette. No additives, no preservatives, no flavourings. Prepared products like Tesco Zesty Courgette Slaw move to NOVA 3 or higher due to added oils, dressings, and other ingredients.
Courgette at Tesco
Source: Tesco product page, October 2025
2 UPF markers
*Prices were correct at the time of collection and may have since changed. Check Tesco.com for current pricing.
What to watch for when shopping
Plain fresh courgettes are always NOVA 1 and glucose-safe. The only thing to watch is prepared courgette products — the Tesco Zesty Courgette Slaw jumps to 97 kcal/100g (nearly 5x the plain courgette) due to added sunflower oil and dressing. Courgettes are 95% water, making them one of the best volume foods for anyone trying to eat more while consuming fewer calories. They work brilliantly spiralised as a low-carb pasta replacement (courgetti) — a 200g serving of courgetti has just 3.6g carbs compared to 50g+ in the same weight of pasta. Budget tip: Tesco Courgettes Loose at £0.52 each is the cheapest option.
Check any product yourself
Paste an ingredient list and get an instant NOVA score
Our free NOVA Classifier analyses any ingredient list and flags every ultra-processed marker.
Frequently asked questions
See this automatically while you shop Tesco
SpikeSaver shows calorie counts, NOVA scores, hidden sugars, and glucose impact — right on the Tesco product page.
No more switching between tabs. Get everything you need while you browse.
Install Chrome Extension — Free in BetaChrome extension · Free during beta · Works on Tesco.com