Nectarines are a sweet, juicy summer fruit, but their carbohydrate content matters if you track carbs for weight loss, diabetes management, or macronutrient goals. This Nectarine Carbs Per 100g Calculator uses USDA FoodData Central nutrition values to estimate total carbohydrates, net carbs, fiber, and sugar from any portion size.
Just enter a weight in grams, kilograms, or ounces, or select a common serving like a medium nectarine or a cup of sliced fruit. The tool instantly converts your portion to grams and applies the per-100g carb reference value (10.55 g total carbs, 1.7 g fiber, 7.89 g sugars).
Whether you are meal-prepping, counting net carbs on a low-carb plan, or simply curious about fruit nutrition, this calculator gives you a fast, reliable portion-based answer in seconds.
Nectarine Carbs Calculator
Estimate total carbs, net carbs, fiber, and sugars for any nectarine portion.
Step-by-Step Guide
This calculator works with raw nectarine flesh. First choose how much fruit you want to evaluate: type a weight in grams, switch to kilograms or ounces, or pick "whole medium nectarine" or "1 cup sliced" from the unit menu. If you prefer working with common serving sizes, use the quick-fill buttons above the form to load 100 g, one medium fruit, one cup of slices, or a single ounce.
Next decide whether net carbs should be the headline number. Net carbs are total carbohydrates minus dietary fiber, which is a common approach for low-carb and ketogenic meal planning. If the checkbox is on, the main result will be net carbs; fiber and sugar are still shown in the breakdown below. Click Calculate Carbs to see total carbs, net carbs, fiber, and sugars, plus the exact weight and math used.
Use Reset to clear the form and start a new comparison, for example if you want to test a 50 g snack portion versus a full serving.
Formula Explained
The calculation uses a simple proportion based on USDA FoodData Central values for raw nectarines:
- Total carbohydrates: 10.55 g per 100 g
- Dietary fiber: 1.70 g per 100 g
- Sugars: 7.89 g per 100 g
- Net carbs: 10.55 − 1.70 = 8.85 g per 100 g
The formula is: portion weight in grams × (10.55 ÷ 100) = grams of total carbs. Net carbs follow the same pattern after subtracting fiber. For a 150 g medium nectarine:
Weight: 150 g × 10.55 / 100 = 15.83 g total carbs
Fiber: 150 g × 1.70 / 100 = 2.55 g
Sugars: 150 g × 7.89 / 100 = 11.84 g
Net carbs: 15.83 − 2.55 = 13.28 g
This is why the calculator first converts your chosen unit into grams — every macro estimate starts from the same per-100g reference.
Reference Portion Table
The table below shows typical carb values for common nectarine portions using the USDA reference. Use it as a quick visual guide or to double-check the calculator output.
| Portion | Weight | Total Carbs | Net Carbs | Fiber | Sugars |
|---|---|---|---|---|---|
| 100 g | 100 g | 10.6 g | 8.9 g | 1.7 g | 7.9 g |
| 1 oz | 28 g | 3.0 g | 2.5 g | 0.5 g | 2.2 g |
| 1 medium nectarine | 150 g | 15.8 g | 13.3 g | 2.6 g | 11.8 g |
| 1 cup sliced | 143 g | 15.1 g | 12.7 g | 2.4 g | 11.3 g |
Values are rounded to one decimal place for readability.
Carb-Counting Tips
Weigh the fruit before you eat. Volume estimates like "one cup sliced" can vary based on how thick you slice the fruit. A digital kitchen scale gives the most reliable result.
- Count the whole edible portion: nectarine skin is included in the carb data, so weigh the fruit as you would eat it, then remove only the pit.
- Use net carbs only if you follow a low-carb or keto approach. For general meal planning, total carbohydrates are the standard value on nutrition labels.
- Track raw nectarine separately from cooked forms. Baking or stewing concentrates sugars by removing water, and sweetened recipes add extra carbs.
- Be consistent with your nutrition logging app: log the exact grams you entered rather than a generic fruit entry.
What Affects Accuracy
The values in this tool are averages from the USDA FoodData Central database for raw nectarines. Real fruit varies by cultivar, ripeness, growing conditions, and water content. A very ripe, large nectarine can contain noticeably more sugar, while a firmer, less ripe fruit can contain slightly less. The difference is usually small — within 1–2 g of carbs per 100 g — but it can matter when you need precision for strict macro tracking or insulin dosing.
Also note that canned nectarines in syrup, dried nectarines, or juice-sweetened products have very different nutrition profiles and should not be estimated with this calculator. For those, read the package label or use a database entry for the specific product.
Frequently Asked Questions
How many carbs are in a whole nectarine?
A medium nectarine (about 150 g) contains roughly 15.8 g of total carbohydrates and 13.3 g of net carbs. Values depend on fruit size, so weighing the specific fruit is more accurate than using an average.
Are nectarines keto-friendly?
Nectarines are a moderate-carb fruit at roughly 8.9 g of net carbs per 100 g. A small 100 g portion can fit into a ketogenic diet if it stays within your daily carb limit, but larger servings can use up a large share of a 20–50 g daily keto allowance.
Should I subtract fiber from total carbs?
Subtracting fiber is common for low-carb diets because dietary fiber is not digested like sugar and starch. For standard food labeling and general nutrition, total carbohydrates are what appear on the label. Choose the method that matches your goals and be consistent.
Is there a difference between nectarines and peaches?
Nectarines and peaches are very close nutritionally. Raw peaches contain roughly 9.5–10 g of carbs per 100 g, similar to nectarines. The main difference is the fuzz-free skin and slightly firmer flesh, not a major macronutrient difference.
For official nutrient data, consult the USDA FoodData Central database. For general guidance on carbohydrates in a healthy diet, see the Harvard T.H. Chan School of Public Health carbohydrate resource.