Zucchini Calories & Nutrition Facts
Very low calorie summer squash, excellent pasta substitute for low-carb diets.
Quick answer
How many calories are in Zucchini?
Zucchini has 17 calories per 100g. A 1 cup, chopped (124g) has about 21 calories. It is a low-calorie food, with most calories coming from carbs.
Start with your portion
Turn Zucchini into a daily plan
Practical Portion Guide for Zucchini
| Portion | Calories | Protein | Carbs | Net carbs | Fat |
|---|---|---|---|---|---|
| 1 cup, chopped (124g) | 21 kcal | 1.5g | 3.8g | 2.6g | 0.4g |
| 1 cup, sliced (113g) | 19 kcal | 1.4g | 3.5g | 2.4g | 0.3g |
| 1 large (323g) | 55 kcal | 3.9g | 10.0g | 6.8g | 1.0g |
| 100g USDA reference | 17 kcal | 1.2g | 3.1g | 2.1g | 0.3g |
Use gram-based portions when precision matters, especially during weight loss or macro tracking.
% Daily Value: 1 cup, chopped (124g) vs 100g
Percent Daily Values use the FDA reference amounts for adults (protein 50g, fiber 28g, carbohydrate 275g, fat 78g, sodium 2,300mg, cholesterol 300mg, potassium 4,700mg). The FDA label guide treats 20% DV or more per serving as high and 5% DV or less as low. Potassium comes from USDA FoodData Central FDC ID 169291 (Squash, summer, zucchini, includes skin, raw); the other values are this page's 100g reference scaled to the portion.
| Nutrient | Per 100g | % DV | 1 cup, chopped (124g) | % DV |
|---|---|---|---|---|
| Protein | 1.2g | 2% | 1.5g | 3% |
| Dietary fiber | 1g | 4% | 1.2g | 4% |
| Total carbohydrate | 3.1g | 1% | 3.8g | 1% |
| Total fat | 0.3g | 0% | 0.4g | 0% |
| Sodium | 8mg | 0% | 10mg | 0% |
| Cholesterol | 0mg | 0% | 0mg | 0% |
| Potassium (USDA) | 261mg | 6% | 324mg | 7% |
Source: FDA Daily Values (21 CFR 101.9), checked September 17, 2026. USDA record: FDC ID 169291.
Serving Size Calculator
Macros Breakdown (per 100g)
Diet Suitability
Glycemic Index: 15 (Low)
How Zucchini Fits Into a Diet
Zucchini can fit a balanced diet when portioned against your calorie and macro targets.
Build meals around protein, fiber, and minimally processed ingredients to make the portion more filling.
Preparation method, brand, and added ingredients can change the final nutrition values.
Plan Around Zucchini
Zero-Calorie Foods Guide
Use low-calorie vegetables like Zucchini to increase meal volume.
Calorie Deficit Calculator
Estimate the daily calorie target that turns low-calorie foods into a real plan.
Keto Diet Guide
Check how low-carb foods like Zucchini fit within a ketogenic day.
Calorie Calculator
Calculate your daily intake target before choosing serving sizes.
Compare Zucchini With Similar Vegetables
Use this comparison when choosing a serving. Calories alone do not tell the full story: protein, fiber, fat, sodium, and realistic portion size determine whether a food fits your plan.
| Food | Calories | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|
| Zucchini | 17 kcal | 1.2g | 3.1g | 0.3g | 1g |
| Broccoli | 34 kcal | 2.8g | 7g | 0.4g | 2.6g |
| Spinach | 23 kcal | 2.9g | 3.6g | 0.4g | 2.2g |
| Carrot | 41 kcal | 0.9g | 10g | 0.2g | 2.8g |
| Tomato | 18 kcal | 0.9g | 3.9g | 0.2g | 1.2g |
| Cucumber | 15 kcal | 0.7g | 3.6g | 0.1g | 0.5g |
All comparison values use each food's 100-unit reference so foods can be compared on the same basis.
Vitamins & Minerals
Vitamins
Minerals
Complete Nutrition Facts (per 100g)
% DV = percent of the FDA Daily Value for a 2,000-calorie diet, per 100g. Total sugars have no Daily Value; the FDA value applies to added sugars only.
Methodology & Nutrition Data Sources
How we calculate nutrition data for Zucchini: Calorie and macronutrient values are standardized reference profiles, generally based on USDA FoodData Central entries where available, then scaled to the serving you choose. Entries may come from different FDC data types or releases, and brand or preparation differences can change the numbers.
- Calorie and macronutrient data sourced from the USDA FoodData Central , the federal food composition database used as the main reference where a matching entry exists.
- Daily Value context: for % DV comparisons, use the FDA Daily Value reference amounts for a 2,000 calorie diet (21 CFR 101.9).
- Dietary reference intakes (DRI) for vitamins and minerals are available in the National Academies Dietary Reference Intake tables for further reading; this page does not calculate DRI percentages.
- Glycemic index values are approximate listed values; GI varies by variety, ripeness, and preparation, so compare with the Harvard Health Glycemic Index Reference and the University of Sydney GI database.
- Dietary guidelines context from the HHS/USDA Dietary Guidelines for Americans 2020–2025 , the federal evidence-based nutrition guidance.
Authoritative nutrition data sources:
- USDA FoodData Central, comprehensive food composition database
- FDA Nutrition Facts Label rules, % Daily Value methodology
- NIH Office of Dietary Supplements, vitamin and mineral research
- CDC Nutrition, Public Health Guidance, chronic disease and diet
- HHS/USDA Dietary Guidelines 2020–2025, federal nutrition recommendations
- Harvard T.H. Chan School of Public Health, The Nutrition Source, evidence-based dietary guidance
Nutrition Disclaimer: Calorie and nutrient values are generally based on USDA reference data and may vary by brand, preparation method, ripeness, and cooking technique. These values are for informational purposes only and should not replace personalized dietary advice from a registered dietitian. Individuals with medical conditions should consult a healthcare provider before making significant dietary changes.
Reviewed by Priya Lindqvist · Last updated September 17, 2026 · Values may not reflect the newest USDA FoodData Central release
Track Your Nutrition
Use our free calorie calculator to find out exactly how many calories you need per day.
Frequently Asked Questions
How many calories are in 1 cup, chopped Zucchini?
1 cup, chopped (124g) of Zucchini has about 21 calories, 1.5g protein, 3.8g carbohydrates, 1.2g fiber, and 0.4g fat. The 124g portion weight is the USDA FoodData Central household measure for FDC ID 169291 (Squash, summer, zucchini, includes skin, raw), scaled from the 100g reference values.
Is Zucchini high in protein?
Zucchini has 1.2g protein per 100g, which is 2% of the 50g FDA Daily Value. 1 cup, chopped (124g) supplies about 1.5g, or 3% DV. Under the FDA label guide (20% DV or more per serving is high, 5% or less is low), that serving counts as a low-protein serving.
Is Zucchini a good source of potassium?
USDA FoodData Central lists 261mg potassium per 100g for Squash, summer, zucchini, includes skin, raw (FDC ID 169291), which is 6% of the 4,700mg Daily Value. 1 cup, chopped (124g) provides about 324mg, or 7% DV.
How many calories are in Zucchini?
Zucchini contains 17 calories per 100g serving. Using general 4-4-9 calorie factors, that is roughly 5 calories from protein, 12 calories from carbohydrates, and 3 calories from fat; these estimates may not add up exactly to the listed total.
Is Zucchini good for weight loss?
Yes, Zucchini is excellent for weight loss with only 17 calories per 100g. It is low in calories and can help you feel satisfied while maintaining a calorie deficit.
How much protein is in Zucchini?
Zucchini contains 1.2g of protein per 100g. This is a relatively low protein food; consider pairing it with higher protein sources.
What serving size should I track for Zucchini?
Track Zucchini by grams when precision matters. A practical starting point is 1 cup, chopped (124g), which is about 21 calories. For packaged, restaurant, fried, sauced, or sweetened versions, use the product label because brand formulas can differ from the plain reference.
Is Zucchini keto-friendly?
Yes, Zucchini is keto-friendly with only 3.1g of carbohydrates per 100g. It fits well within the typical keto macro limits of 20-50g net carbs per day.
Is Zucchini good for diabetics?
Zucchini may fit a diabetes meal plan with a listed glycemic index of 15, but the useful decision is the actual portion, total carbohydrates, added sugar, and the rest of the meal. People using diabetes medication should follow personalized clinical guidance.
What vitamins and minerals are in Zucchini?
Calorique's food profile lists vitamins C, B6, K, Folate and minerals including Potassium, Manganese, Magnesium for Zucchini. These are general highlights, not measured amounts or a "good source" rating; check USDA FoodData Central or the product label for exact micronutrient values.
Where does Calorique get nutrition data for Zucchini?
Calorique standardizes Zucchini nutrition values per 100g using USDA FoodData Central reference fields where available, then scales the data into realistic serving sizes. FDA Nutrition Facts methodology and authoritative nutrition references are used for context. This page was last reviewed September 17, 2026.
Related Calculators
Broccoli
34 cal · 2.8g protein per 100g
Spinach
23 cal · 2.9g protein per 100g
Carrot
41 cal · 0.9g protein per 100g
Tomato
18 cal · 0.9g protein per 100g
Cucumber
15 cal · 0.7g protein per 100g
Sweet Potato
86 cal · 1.6g protein per 100g
Bell Pepper (Red)
31 cal · 1g protein per 100g
Kale
49 cal · 4.3g protein per 100g