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Calories in Cake

Q: How many calories in a slice of cake?

Chocolate cake with frosting: ~385 calories per slice (111g). Angel food: 258 kcal/100g. Cheesecake: ~321 kcal. Carrot cake: ~430 kcal.

Updated July 2026 · Source: USDA FoodData Central

347

kcal

per 100g

4.6

Protein

12.4

Fat

55.0

Carbs

0.9

Fiber

385

kcal per slice (111g)

347

kcal per 100g

520

kcal large restaurant slice

⚠️385 kcal per slice — often underestimated

⚠️40g sugar per 100g

⚠️384mg sodium per 100g

😌Angel food cake: only 258 kcal/100g

😌Cheesecake: 321 kcal/100g — lower than layer cake

⚠️Restaurant slices = 500-700+ kcal

🍽 Calculate Calories for Any Amount of Cake

Weight100g

Nutrition Facts

Per 100g cake

* % Daily Value based on a 2,000 kcal diet.

Quick summary: Chocolate cake with frosting contains 347 calories per 100g — about 385 kcal per standard slice. High in refined flour (55g carbs), sugar (40g), and fat from frosting. Angel food cake: only 258 kcal/100g. Restaurant slices often 150-200g = 500-700+ kcal. Very low in nutrients.

Vitamins & Minerals — per 100g

Nutrient	Amount	% Daily Value
Sodium	384mg	17%
Iron	1.9mg	11%
Thiamine	0.13mg	11%
Riboflavin	0.11mg	8%
Phosphorus	97mg	8%
Folate	26µg	7%
Potassium	112mg	2%
Calcium	37mg	4%
Magnesium	10mg	2%
Zinc	0.5mg	5%

Calories in Cake by Weight

Weight	Calories	Protein	Net Carbs	Fat

Macronutrient Breakdown — per 100g

Fat12.4g · 32% of calories

Protein4.6g · 5% of calories

Carbohydrates55.0g · 63% of calories

Fiber0.9g · Net carbs: 54.1g

Chocolate cake with frosting (USDA). Cheesecake: ~321 kcal/100g. Angel food cake: 258 kcal — lower. Carrot cake with cream cheese: ~430 kcal/100g. Restaurant slices typically 150-200g.

Key Nutrients

⚠️

Sugar

40g

High

From batter and frosting

⚠️

Sodium

384mg

17% DV

From baking soda and frosting

🔥

Fat

12.4g

16% DV

From butter and frosting

⚡

Thiamine

0.13mg

11% DV

From enriched flour

⚡

Iron

1.9mg

11% DV

From enriched flour

⚡

Riboflavin

0.11mg

8% DV

From flour and eggs

Cake Nutrition Facts

Frosting — The Calorie Multiplier

A plain sponge cake: ~280 kcal/100g. Adding thin buttercream: ~350 kcal. Heavily frosted layer cake: 450+ kcal/100g. Buttercream frosting is approximately 500 kcal/100g — mostly butter and sugar. Reducing frosting amount is the most effective single strategy for reducing cake calories.

Restaurant Portion Reality

Restaurant and bakery slices are typically 150-200g — significantly larger than the USDA 'standard' 111g slice. A 200g restaurant chocolate cake slice with thick frosting: 650-800 kcal — more than a full meal. Sharing a restaurant dessert slice is one of the most effective calorie management strategies.

Angel Food Cake — The Exception

Angel food cake (egg whites, sugar, flour — no fat) is genuinely lower at ~258 kcal/100g. Naturally fat-free and lower in sodium. Fresh fruit topping makes it one of the more nutritious dessert options.

Cake vs Other Desserts

Cake (347 kcal/100g) is actually lower per 100g than cookies (480 kcal), donuts (452 kcal), or brownies (466 kcal). The concern with cake is portion size — restaurant slices are much larger than typical cookie servings.

Compare Cake Calories

Is Cake Suitable for Your Diet?

❌

Weight loss

No — 385 kcal per slice

❌

Keto

No — 55g carbs

❌

Paleo

❌

Gluten-free

No — wheat flour

❌

Diabetic

No — high sugar

⚠️

Vegan

Check eggs and butter

✅

Vegetarian

Yes

❌

Heart health

High saturated fat and sugar

Related Calculators

Frequently Asked Questions

How many calories in a slice of cake?

Chocolate cake with frosting: ~385 calories per slice (111g). Angel food: 258 kcal/100g. Cheesecake: ~321 kcal. Carrot cake: ~430 kcal.

What is the lowest calorie cake?

Angel food cake: 258 kcal/100g. Sponge without frosting: ~280 kcal. Cheesecake: 321 kcal. Chocolate layer with frosting: 347 kcal.

How to reduce cake calories?

Reduce frosting thickness, use two layers instead of three, choose lighter frosting (whipped cream vs buttercream), request smaller slices, or choose angel food or chiffon base.

Is birthday cake OK?

For occasional celebration eating, yes — enjoying birthday cake without guilt is fine. The concern is frequency; cake at every social event becomes a significant calorie source.

How many calories in a whole cake?

Typical 8-inch chocolate layer cake (750-900g): 2,600-3,100 kcal. Divided into 12 slices: 217-260 kcal per slice.

Is cheesecake healthier than cake?

Cheesecake (321 kcal/100g) has fewer calories than chocolate layer cake (347 kcal) but provides more protein and calcium. Nutritionally similar — both are high-calorie treats.

Sources

Nutrition values from USDA FoodData Central. Not medical advice.