Calories in a Cupcake: 470 kcal [94 Minutes of Walking]
A cupcake is about 470 calories per 100 g. Four real British supermarket labels put the range at 441 to 483, tight enough to treat 470 as the working figure. The calories in a cupcake are not really a cake question, though: they are an icing question, and the swirl on top is doing more of the work than the sponge underneath.
You'd need to walk about 94 minutes to burn the 470 calories in 100 g.
How long does it take to burn off a cupcake?
100 g is 470 kcal. Enter your weight and the amount you ate to see how long it takes you to burn that off:
lb
| Activity | Time to burn 470 kcal |
|---|---|
| Walking, brisk | 1 hr 34 min |
| Cycling, moderate | 59 min |
| Swimming, moderate | 1 hr 7 min |
| Jogging | 55 min |
| Weight training, moderate | 1 hr 44 min |
Times are for a 154 lb (11 st) adult at a steady pace; change the weight to see yours. The amount is set to the portion in the text (100 g); change it to what you actually ate. BodyPal works this out from your steps automatically.
On this page
- Cupcake quick facts
- What one cupcake weighs
- Four real UK labels
- The icing is the whole variable
- Mini cupcakes are not lighter
- Sugar is the row that dominates
- Cupcake, fairy cake or a slice of sponge
- Most popular cupcake brands in the United Kingdom
- FAQ
Cupcake quick facts
Averaged across four iced cupcake products currently sold in British supermarkets.
| Nutrient | Per 100 g | RI%* |
|---|---|---|
| Energy | 470 kcal / 1,966 kJ | 24% |
| Protein | 3.9 g | 8% |
| Carbohydrate | 54.6 g | 21% |
| – of which sugars | 40.6 g | 45% |
| Fat | 25.5 g | 36% |
| – of which saturates | 9.0 g | 45% |
| Fibre | 1.5 g | – |
| Salt | 0.30 g | 5% |
Verified nutrition data
Numbers on this page come from CoFID, the UK government’s Composition of Foods Integrated Dataset, and from manufacturer labels where a branded product is named. Last verified August 2026. How we verify our data →
*RI% = 100 g as a share of an adult's daily reference intake, based on 2,000 kcal.
Sugar and saturated fat both land at 45% of the day per 100 g, which is a rare thing to see. Most sweet foods are heavy on one and moderate on the other. A cupcake is a fat-based frosting sitting on a sugar-based sponge, so it manages both at once.
What one cupcake weighs
This is where honest pages and confident pages part company. There is no standard cupcake. Bakery counters, supermarket four-packs and home tins all use different tins and different fills, and the number you want is a weight, not a recipe.
The per-100 g figure gives you a scale you can use on anything:
- 10 g of cupcake: 47 kcal
- 50 g cupcake: about 235 kcal
- 60 g cupcake: about 282 kcal
- 70 g cupcake: about 329 kcal
Weigh one from the pack you actually buy, once, and you will have a figure that holds for that product until they change the recipe. One British supermarket cupcake label prints a 52 g serving, which is a reasonable opening guess if you have nothing to weigh with.
The frosting is where the weight varies most, and it varies enormously. Two cakes baked from the same batter can differ by 20 g on the top alone, which is close to 100 calories of difference from something applied with a piping bag in four seconds.
Four real UK labels
| Product, per 100 g | Calories | Protein | Carbs | Sugars | Fat | Saturates |
|---|---|---|---|---|---|---|
| Chocolate fudge cupcakes | 481 kcal | 4.7 g | 45.3 g | 30.7 g | 29.7 g | 8.0 g |
| Chocolate fudge cupcakes, second brand | 441 kcal | 4.1 g | 56.3 g | 42.7 g | 21.8 g | 6.8 g |
| Mini cupcakes | 469 kcal | 4.1 g | 52.9 g | 42.1 g | 26.3 g | 11.7 g |
| Mini rainbow cupcakes | 483 kcal | 2.5 g | 64.0 g | 47.0 g | 24.0 g | 9.5 g |
Forty-two calories separate the lightest from the heaviest, which is nothing across four different products from four different bakers. The recipe is settled: roughly a quarter fat, roughly half carbohydrate, most of that carbohydrate sugar.
Where they genuinely differ is inside those totals. The two chocolate fudge products are 481 and 441 calories, almost the same, and yet one carries 30.7 g of sugar and the other 42.7 g. The lighter cake is the sweeter one, because the heavier one spends more of its budget on fat. That is a good illustration of why sugar alone never tells you the calorie count.
Salt is the quiet outlier. One product lists 0.675 g per 100 g and the mini ranges list 0.1 and 0.1275, a spread of nearly seven times. If salt is a number you watch, cupcakes are not a category where the label is predictable.
The icing is the whole variable
Take the icing off and a cupcake stops being remarkable.
UK composition data gives a fatless homemade sponge as 292 kcal per 100 g, with 5.6 g of fat. Add butter icing to that same sponge and it becomes 476 kcal per 100 g, with 27.3 g of fat. That is a 63% increase in energy, and the cake underneath never changed.
Four hundred and seventy-six is also, within six calories, exactly where the supermarket cupcakes land. A cupcake is not a cake in a smaller format. It is a home-style buttercream sponge, sold by the piece.
There is one place the shop version comes out ahead. The homemade butter-iced sponge carries 16.57 g of saturates per 100 g, against roughly 9.0 g in the retail cupcakes. Butter is a harder fat than the vegetable-based frostings most manufacturers use, so the supermarket cake is around 45% of the daily saturated fat reference per 100 g where the home-baked one is 83%. Baking it yourself gives you control over everything except that.
Mini cupcakes are not lighter
Mini cupcakes are 469 kcal per 100 g. Mini rainbow cupcakes are 483. Full-size chocolate fudge cupcakes are 481 and 441.
Put plainly: shrinking the tin does not change the food. The mini products in this data are, if anything, marginally denser than the full-size ones, because a small cake carries proportionally more frosting for its volume.
What the mini format does buy you is a smaller decision. If the portion you take is genuinely one small cake instead of one large one, the saving is real and it comes entirely from the weight in your hand. If two minis replace one standard cupcake, you have saved nothing at all.
Sugar is the row that dominates
Forty point six grams of sugar per 100 g is the average here, and the range runs from 30.7 up to 47.0. Against a 90 g daily reference, 100 g of cupcake is 45% of the day.
Scale that to a real cake. At the typical 41 g per 100 g, a 60 g cupcake carries about 24 g of sugar. Take the sweetest label in the group, 47 g per 100 g, and the same size cake carries 28 g. Either figure is more than a quarter of the day's reference from one item that most people would not describe as a meal.
The NHS position on sugar is about free sugars specifically, and the icing on a cupcake is close to pure free sugar with fat mixed through it. That is the practical reason a cupcake reads higher than an equally large piece of plain sponge on this row.
Cupcake, fairy cake or a slice of sponge
| Cake, per 100 g | Calories | Sugars | Fat |
|---|---|---|---|
| Iced cupcake, UK labels | 470 kcal | 40.6 g | 25.5 g |
| Sponge with butter icing, homemade | 476 kcal | 40.0 g | 27.3 g |
| Sponge, soft iced, retail | 368 kcal | 39.0 g | – |
| Sponge with jam and buttercream, retail | 354 kcal | – | – |
| Sponge, fatless, homemade | 292 kcal | 30.6 g | 5.6 g |
Retail cake slices are lighter per gram than cupcakes, and by a decent margin: 368 and 354 against 470. Commercial sponge is aerated and moister, so more of the weight you buy is air and water. A cupcake is a denser thing with a fat-heavy topping, and the numbers follow.
Our take: if the choice is a cupcake or a slice of shop-bought iced sponge, the slice is the lighter food per gram and the cupcake is the easier portion to control. Take the cupcake if it stops you cutting a second slice. Take the slice if you are weighing what you eat and want the lower figure. The genuinely lighter option is neither, it is fatless sponge at 292, which most people would call a different dessert entirely.
A fairy cake is the smaller British ancestor of the cupcake, usually with a flat lick of glacé icing rather than a piped swirl of buttercream. That topping is sugar without much fat in it, so a plainly iced fairy cake sits closer to the 368 figure than to 470. Weigh it and use whichever number matches what is on top.
The muffin comparison goes the other way from what people expect. British composition data puts a retail American-style muffin at 375 kcal per 100 g and a chocolate one at 436, both below the 470 of a frosted cupcake. The muffin is the bigger cake; the cupcake is the denser one.
For related bakery numbers, the brownie page covers the densest end of the tray-bake shelf, and a chocolate chip cookie, a scone, a croissant, a hot cross bun or a stack of pancakes all sit in different parts of the same aisle.
Most popular cupcake and fairy cake brands in the United Kingdom
Ranked by how widely each product appears among foods sold in the United Kingdom, from the BodyPal food database of over 3.3 million products. Calories are the figures printed on each label. Glacé-iced fairy cakes sit lower than buttercream-topped cupcakes.
| Product | Calories (per 100 g) |
|---|---|
| Asda Cupcake | 454 kcal |
| Aldi Tea Time Fairy Cakes | 450 kcal |
| Sainsbury’s Victoria Fairy Cakes | 436 kcal |
| Lidl Iced Fairy Cakes | 426 kcal |
| Iceland Iced Fairy Cakes | 346 kcal |
| Tesco Cupcake | 233 kcal |
Brand popularity: BodyPal food database. Nutrition: manufacturer labels.
Cupcake FAQs
How many calories in a cupcake with frosting?
About 470 kcal per 100 g, and every product in this data is sold already frosted, so that figure includes the swirl. On a 60 g cake that is roughly 282 kcal. Frosting is the reason the number is high: the same sponge without it is 292 kcal per 100 g.
How many calories in a mini cupcake?
Per 100 g, mini cupcakes are 469 kcal and mini rainbow ones 483, which is the same as full-size cakes or a shade higher. The saving comes only from eating less, at roughly 47 kcal for every 10 g. Small cakes carry proportionally more frosting for their size, so they are not a lighter recipe.
How many calories in a chocolate cupcake?
Two chocolate fudge products on the UK shelf list 481 and 441 kcal per 100 g. Their sugar differs far more than their calories do, at 30.7 g against 42.7 g, because the heavier cake spends more of its energy on fat. Use 460 per 100 g as a working average for a chocolate cupcake and weigh yours if you want better than that.
How many calories in a vanilla cupcake?
Take the same 470 kcal per 100 g. Flavouring and colour add no measurable energy, and vanilla and chocolate cupcakes are built from the same sponge and the same buttercream base. What changes the count is the amount of frosting on top and the size of the case, not the flavour.
How many calories in a homemade cupcake?
476 kcal per 100 g for a homemade sponge with butter icing, near enough identical to the shop-bought average of 470. The difference sits in the saturated fat: 16.57 g per 100 g at home against roughly 9.0 g in retail cupcakes, because butter is a harder fat than commercial frosting. Baking without any fat in the sponge brings it to 292.
How much sugar is in a cupcake?
Between 30.7 g and 47.0 g per 100 g across four UK labels, averaging 40.6 g. A 60 g cake therefore carries roughly 24 g of sugar, more than a quarter of the 90 g daily reference. The icing supplies most of it, which is why plain sponge at 30.6 g per 100 g reads lower.
How many calories in a fairy cake?
A fairy cake is smaller than a cupcake and usually topped with glacé icing rather than buttercream, so it sits nearer the 368 kcal per 100 g of retail iced sponge than the 470 of a frosted cupcake. Weigh it and apply whichever figure matches the topping. Buttercream on a fairy cake makes it a small cupcake by any measure that counts.
Is a cupcake worse than a slice of cake?
Per gram, yes: 470 kcal per 100 g against 368 for retail iced sponge and 354 for a jam and buttercream slice. Per portion it usually goes the other way, because a cupcake comes in a fixed case and a slice is cut by hand. The cupcake is the denser food and the easier portion to control.
Similar foods
- Chocolate chip cookie — 52 kcal small biscuit
- Krispy Kreme — 225 kcal an Original Glazed
- Brownie — ~304 kcal per square
- Flapjack — 260 kcal a slice
- Doughnut — 413 kcal per 100 g iced ring
- Greggs Yum Yum — 310 kcal each
Skip the icing maths
Photograph the cake in its case and BodyPal estimates the sponge and the swirl together, sugar included.
