Can brown sugar fit a keto diet?

Usually does not fit

Usually, no: brown sugar does not fit a keto diet.

Per 100 g, it has 98.1 g calculated net carbs.

Check another amount

Values update from the same USDA record. They do not estimate a personal carb target or ketosis response.

Amount in grams

Listed source portion: 100 g (100 g).

Calculated net carbs

98.1 g

Total carbohydrate

98.1 g

Dietary fiber

0 g

Editorial illustration of Sugar, brown.

Nutrition facts for Brown sugar

Source-portion carb band: Higher net carbs per listed portion. The category is based only on calculated net carbs for the listed portion: 5 g or less, more than 5 g to 10 g, or more than 10 g. Your total intake, preparation, and clinical context can change how a food fits your own plan.

Nutrient	Per listed portion: 100 g (100 g)	Per 100 g
Energy	380 kcal	380 kcal
Protein	0.1 g	0.1 g
Total fat	0 g	0 g
Saturated fat	0 g	0 g
Total carbohydrate	98.1 g	98.1 g
Dietary fiber	0 g	0 g
Calculated net carbs	98.1 g	98.1 g
Total sugars	97 g	97 g
Sodium	28 mg	28 mg
Potassium	133 mg	133 mg

The table keeps the USDA basis separate from the selected portion.

1. Food formBrown sugar
2. USDA per-100 g basis98.1 g calculated net carbs
3. Selected source portion98.1 g calculated net carbs
4. Calculation boundaryPortion value is calculated from the cited 100 g record and portion weight

Explore this food category

Compare this form and portion with other records in fats & condiments. The category hub explains why forms, preparation, and portions should not be treated as interchangeable.

For meal-level context, use the everyday food choices.

How the calculation works

Calculated net carbs = total carbohydrate − dietary fiber. For this USDA record, that is 98.1 g − 0 g = 98.1 g per 100 g. Net carbs is a planning convention used on this site; it is not a separate USDA nutrient field or a regulatory nutrition-label value. This calculation does not automatically subtract sugar alcohols.

For the underlying approach and its limitations, see how net carbs are explained and the net-carb calculator.

Food record and source

• USDA food description: Sugar, brown
• FoodData Central ID: FDC ID 2710260
• Dataset: Survey (FNDDS) FNDDS 2021-2023 (2024-10-31)
• Record publication date: 10/31/2024
• Selected portion: 100 g (100 g)

The nutrition values are reported by the USDA per 100 g. The per-portion column above is calculated from that value and the USDA portion weight; no household measure was invented for this page.

1. USDA FoodData Central, Survey (FNDDS) FNDDS 2021-2023 (2024-10-31), FDC ID 2710260. https://fdc.nal.usda.gov/food-search/?query=2710260, https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_survey_food_json_2024-10-31.zip

Compare related foods

• Blueberry syrup — Compare another food in the sweetener or sweet spread group.
• Honey — Compare another food in the sweetener or sweet spread group.
• Corn syrup — Compare another food in the sweetener or sweet spread group.

Browse all Food Database entries or start with the keto food list for practical meal-planning context.

Frequently Asked Questions

Can brown sugar fit a keto diet?

Brown sugar usually does not fit a keto diet. Per 100 g, it has 98.1 g calculated net carbs.

How many net carbs are in Brown sugar?

The listed 100 g (100 g) has 98.1 g calculated net carbs. Per 100 g, the record has 98.1 g calculated net carbs.

How are net carbs calculated for Brown sugar?

247-Keto calculates net carbs as total carbohydrate minus dietary fiber, capped at zero. For this record, that is 98.1 g total carbohydrate minus 0 g fiber per 100 g. Sugar alcohols are not subtracted by this calculation.

Where do these Brown sugar nutrition facts come from?

The values come from USDA FoodData Central's Survey (FNDDS) FNDDS 2021-2023 (2024-10-31) release, FDC ID 2710260. The page preserves the listed food description and portion weight so the comparison is traceable.

Article history

1. September 11, 2026Updated after final factual and editorial review
2. August 24, 2026First published