Is sugar keto?

Sugar

Not keto No — sugar is not keto-friendly.

Pure carbohydrate. One tablespoon is about 12 g net carbs.

Nutrition per serving

1 tbsp · 12.5 g
Net carbs
13g
Calories
48kcal
Protein
0g
Fat
0g
Total carbs
13 g
Fiber
0 g
One serving vs. a 20 g daily net-carb limit 63%

About 5 g of sugar adds up to 5 g net carbs — about 40% of a typical serving.

Nutrition facts for sugar
NutrientPer servingPer 100 g
Calories48 kcal387 kcal
Total carbohydrate13 g100 g
Dietary fiber0 g0 g
Net carbs13 g100 g
Sugars 12 g 100 g
Protein0 g0 g
Fat0 g0 g

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Better keto swaps for sugar

Keto sugar substitutes 5 alternatives with carb comparisons and recipes Read guide

Low-carb recipes that replace sugar

Frequently asked questions

Is sugar keto?

No — sugar is not keto-friendly. Pure carbohydrate. One tablespoon is about 12 g net carbs.

How many net carbs are in sugar?

1 tbsp (12.5 g) of sugar has about 13 g net carbs (13 g total carbs minus 0 g fiber). Per 100 g, that's 100 g net carbs.

How much sugar can I eat on keto?

About 5 g of sugar adds up to 5 g net carbs — about 40% of a typical serving. On a typical 20 g daily limit, one serving uses about 63% of your carbs.

What is a good keto substitute for sugar?

More sweeteners

Full sweeteners list

Source: USDA FoodData Central (SR Legacy #169655): Sugars, granulated. Net carbs = total carbohydrate − fiber. Rating: Not keto — More than about 10 g net carbs per typical serving. Swap it for a low-carb alternative. How we rate foods. Last reviewed October 18, 2026.

Typical price: about $1.02/lb — U.S. average price (Sugar, white, per lb: $1.02), Bureau of Labor Statistics, September 2026. How we estimate prices

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