How many calories are in a slice of chocolate cake?

A bakery slice cut as one eighth of an 18 oz cake (64g) is 249 calories. The restaurant-sized wedge, one twelfth of a tall layer cake at 138g, is 537. Per 100g, frosted chocolate cake is 389 calories.

How much sugar is in chocolate cake?

40g per 100g, which is 26g in the small 64g slice and 55g in the 138g slice. That larger slice alone passes the 50g added sugar cap suggested for a 2,000 calorie day.

Chocolate cake vs brownie: which is worse?

Per 100g a brownie is slightly denser at 405 calories against cake's 389. By the portion actually served it flips: a brownie square (56g) is 227 calories, a layer cake slice (138g) is 537.

Is chocolate cake keto-friendly?

No, and not close. Chocolate cake carries 50.6g of net carbs per 100g, so even the small 64g slice is 32g, well past a full day's 20g keto allowance.

How much fat is in a slice of chocolate cake?

20.1g per 100g, mostly from the frosting. The 64g slice holds 13g and the 138g slice 28g, which is close to a third of the fat in a 2,000 calorie day.

Does homemade chocolate cake have fewer calories?

A little, and the frosting explains most of it. USDA lists cake baked from a recipe without frosting at 371 calories per 100g against 389 for the frosted bakery version, so skipping the frosting saves more than changing the batter.

Is there any nutrition in chocolate cake?

Some, incidentally. Per 100g there is 3mg of iron (17% of the daily value), 270mg potassium, 3.5g protein and 2.2g fiber, alongside 348mg of sodium. It is a dessert, not a way to hit a nutrient target.

Chocolate cake vs cookies vs donuts?

Per 100g, cake is the lightest of the three: 389 against 421 for a donut and 451 for a chocolate chip cookie. Piece for piece the order changes, since one cookie (33g) is 149 calories, one donut 253, and a small cake slice 249.

How do I fit chocolate cake into a calorie target?

The 64g bakery slice at 249 calories is about 12% of a 2,000 calorie day, which most people can plan around. The problem is portion drift: the same cake cut into twelfths instead of eighths doubles that to 537.

All Foods

Calories in Chocolate Cake

USDA Verified · FDC 174934 · Aug 2026

249 calories

per 1 slice (1/8 of an 18 oz cake) (64g)

3.5g

Protein

52.8g

Carbs

20.1g

Fat

2.2g

Fiber

Per 100g

Serving Sizes & Calories

Serving Size	Weight	Calories
1 oz	28g	109 cal
1 slice (1/8 of an 18 oz cake)Standard	64g	249 cal
100g	100g	389 cal
1 large slice (1/12 of a layer cake)	138g	537 cal

389 calories per 100g

Complete Nutrition Facts

Per 100g

389 calories

Protein3.5g

Carbohydrates52.8g

Sugar40g

Fat20.1g

Fiber2.2g

Sodium348mg

Potassium270mg

Calcium30mg

Iron3mg

How Chocolate Cake Compares

Chocolate Cake next to similar foods, all values per 100g:

Food	Calories	Protein	Carbs	Fat	Fiber
Chocolate Cake	389	3.5g	52.8g	20.1g	2.2g
Brownie	411	4.8g	63.9g	16.3g	2.1g
Donut	421	6.1g	47.9g	22.7g	2.1g
Chocolate Chip Cookie	453	4g	61g	21.3g	1.5g
Sugar Cookie	465	5.3g	67.3g	19.6g	1.3g