Zucchini is a versatile, low-carb vegetable popular in keto, paleo, and low-glycemic diets. But how many net carbs are actually in that spiralized bowl of zoodles or grilled side dish? Our Zucchini Carbs Calculator gives you a precise breakdown of total carbs, fiber, and net carbs based on the amount you're using — whether raw, cooked, or in a specific preparation.
Simply enter the weight or serving size, choose your unit (grams, ounces, cups, or medium zucchinis), and optionally adjust for cooking method. The calculator instantly shows net carbs, total carbs, and fiber content. Perfect for meal preppers, diabetics, keto dieters, and anyone tracking macronutrients. No more guessing — get accurate carb counts for your zucchini dishes in seconds.
🥒 Zucchini Carbs Calculator
How to Use This Tool
Using the Zucchini Carbs Calculator is straightforward. Start by entering the amount of zucchini you plan to eat — you can type a number directly or click one of the preset quick-fill buttons (e.g., 100 g, 1 medium zucchini, 1 cup chopped). Then select the unit that matches your measurement: grams, ounces, cups, or whole medium zucchinis. Next, choose the preparation method — raw, boiled, steamed, or grilled/roasted — because cooking affects water content and slightly alters the carb density. Finally, click Calculate Carbs to see total carbs, fiber, net carbs, and your serving size. Use the Reset button to clear results and start over.
Formula Explained
The calculator uses standard USDA nutrition data for zucchini. For raw zucchini, the values are approximately 3.11 g total carbs and 1.0 g fiber per 100 g. Boiled or steamed zucchini has slightly lower total carbs (about 2.69 g per 100 g) due to water absorption and leaching of some soluble carbohydrates. Grilled/roasted zucchini retains similar carb content to raw because moisture loss concentrates nutrients, but the per-100g values remain close to raw. The net carbs are calculated as: Net Carbs = Total Carbs − Fiber. Fiber is subtracted because it is not digested and does not raise blood sugar. The calculator converts your input to grams, applies the per-100g values, and scales proportionally.
Worked Examples
Example 1: You eat 1 medium zucchini (196 g) raw. Total carbs = (3.11 / 100) × 196 = 6.10 g. Fiber = (1.0 / 100) × 196 = 1.96 g. Net carbs = 6.10 − 1.96 = 4.14 g.
Example 2: You eat 1 cup of boiled zucchini (124 g). Total carbs = (2.69 / 100) × 124 = 3.34 g. Fiber = (1.0 / 100) × 124 = 1.24 g. Net carbs = 3.34 − 1.24 = 2.10 g.
Example 3: You eat 200 g of grilled zucchini. Total carbs = (3.11 / 100) × 200 = 6.22 g. Fiber = (1.0 / 100) × 200 = 2.00 g. Net carbs = 6.22 − 2.00 = 4.22 g.
Tips & Best Practices
For the most accurate results, weigh your zucchini on a kitchen scale rather than relying on volume measurements. A medium zucchini typically weighs 150–250 g, but sizes vary. If you're following a strict keto diet (under 20 g net carbs per day), zucchini is an excellent low-carb vegetable — even a large serving of 300 g yields only about 6.3 g net carbs raw. Remember that cooking method matters: boiling and steaming reduce total carbs slightly, while grilling concentrates flavors but doesn't change carb counts much per gram. Always check the fiber content on your specific brand if using frozen or pre-packaged zucchini, as values may differ.
Frequently Asked Questions
Is zucchini keto-friendly? Yes, zucchini is very low in net carbs — about 2.1 g per 100 g raw — making it a staple on keto and low-carb diets.
Does cooking zucchini change its carb count? Cooking can slightly reduce total carbs per 100 g due to water absorption (boiling/steaming) or concentration (grilling). Our calculator accounts for these differences.
How many carbs are in zucchini noodles (zoodles)? Zoodles are just raw zucchini spiralized, so use the raw setting. A typical serving of 1 cup (about 100 g) has ~2.1 g net carbs.
Can I use this calculator for yellow squash? Yellow squash has a similar nutritional profile, but values differ slightly. For best accuracy, use a dedicated squash calculator.
Standard Values Reference
| Preparation | Total Carbs (per 100 g) | Fiber (per 100 g) | Net Carbs (per 100 g) |
|---|---|---|---|
| Raw | 3.11 g | 1.0 g | 2.11 g |
| Boiled (drained) | 2.69 g | 1.0 g | 1.69 g |
| Steamed | 2.69 g | 1.0 g | 1.69 g |
| Grilled / Roasted | 3.11 g | 1.0 g | 2.11 g |
Data sourced from USDA FoodData Central. For more details, visit the USDA FoodData Central website.