Calories in sugar

USDA data · Updated October 12, 2026

Sugar (1 tsp, 4 g) has 16 calories, with 0 g of protein, 4.2 g of carbohydrates and 0 g of fat. Per 100 g, that's 387 kcal.

Values are for Sugars, granulated. Amounts vary with size, variety and preparation.

Sugar

Per 1 tsp (4 g)


Calories16

Protein0 g
Carbohydrates4.2 g
   Fiber0 g
   Sugars4.2 g
Fat0 g
Sodium0 mg

Source: USDA FoodData Central.

Calories in sugar by serving

ServingWeightCaloriesProteinCarbsFat
100 g100 g3870 g100 g0 g
1 serving packet3 g110 g2.8 g0 g
1 tsp4 g160 g4.2 g0 g
1 cup200 g7740 g200 g0 g
1 serving 1 cube2 g90 g2.3 g0 g
1 oz28 g1100 g28.3 g0 g

Where the calories come from

Protein 0%Carbs 100%Fat 0%

Sugar has a medium energy density (3.9 kcal per gram). It provides 0 g of protein per 100 kcal.

Oils, spreads & sweets: calories compared

Per 100 gCaloriesProteinCarbsFat
Honey3040.3 g82.4 g0 g
Sugar3870 g100 g0 g
Dark chocolate (70–85%)5987.8 g45.9 g42.6 g
Mayonnaise6801 g0.6 g74.8 g
Olive oil8840 g0 g100 g
Coconut oil8920 g0 g99.1 g

Log it in seconds

In C for Calories, photograph your plate and sugar is estimated along with everything else on it, or search for it and enter the amount in grams. For packaged versions, scan the barcode to use the label.

Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, SR Legacy, FDC ID 169655. Calories are rounded to the nearest whole number and nutrients to one decimal place.

FAQ

Frequently asked questions

How many calories are in sugar?

16 calories in 1 tsp (4 g), or 387 calories per 100 g.

How much protein is in sugar?

0 g of protein in 1 tsp (4 g) (0 g per 100 g).

How many carbs are in sugar?

4.2 g of carbohydrates in 1 tsp (4 g).