How many calories are in a Kit Kat?
A standard four-finger Kit Kat weighs 42 g and carries 218 calories. Per 100 g the bar runs 518 calories, which is candy-aisle normal. The number people miss is the saturated fat: 7.5 g in that one bar, 38% of a day's Daily Value, more than triple the bar's share of calories.
You'd need to walk about 44 minutes to burn the 218 calories in one 1.5 oz bar (42 g).
How long does it take to burn off a Kit Kat?
One 1.5 oz bar (42 g) is 218 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 218 kcal |
|---|---|
| Walking, brisk | 44 min |
| Cycling, moderate | 27 min |
| Swimming, moderate | 31 min |
| Jogging | 26 min |
| Weight training, moderate | 48 min |
Times are for a 155 lb adult at a steady pace; change the weight to see yours. The amount is set to the portion in the text (42 g); change it to what you actually ate. BodyPal works this out from your steps automatically.
On this page
- Kit Kat quick facts
- US servings, from a single finger to the party size bar
- Big Kat, Minis and the flavor spin-offs
- Saturated fat is the row that moves
- How does a Kit Kat compare?
- Most popular kit kat brands
- FAQ
Kit Kat quick facts
The numbers below come from USDA SR Legacy record 167992, "Candies, KIT KAT Wafer Bar". That is the plain four-finger bar in the checkout rack, the one shoppers actually hold, and it is the only USDA record that carries the full set of household portions for it. The thicker BIG KAT sits in a separate record and gets its own section further down.
| Nutrient | Per 100 g | Per 1 bar, 1.5 oz (42 g) | % Daily Value |
|---|---|---|---|
| Calories | 518 | 218 | — |
| Total fat | 25.99 g | 10.9 g | 14% |
| Saturated fat | 17.95 g | 7.5 g | 38% |
| Carbohydrate | 64.59 g | 27.1 g | 10% |
| Dietary fiber | 1 g | 0.4 g | 2% |
| Total sugars | 48.68 g | 20.4 g | — |
| Protein | 6.51 g | 2.7 g | 5% |
| Sodium | 54 mg | 23 mg | 1% |
% Daily Value is based on a 2,000-calorie diet.
Verified nutrition data
Numbers on this page come from USDA FoodData Central, the U.S. Department of Agriculture’s food composition database, and from manufacturer labels where a branded product is named. Last verified September 2026. How we verify our data →
There is no added sugars row here because the SR Legacy edition does not publish added sugars for this record. Total sugars answer the question people are really asking, and they are steep enough on their own. Cholesterol is 5 mg a bar, potassium 97 mg, both about 2% of a Daily Value, so neither is worth a row.
One thing to expect if you read the wrapper: the Hershey label prints 500 calories per 100 g against USDA's 518, and 140 calories for a 28 g portion. That gap is label rounding, not a different recipe. Either figure is fine to log; just do not mix them inside the same day.
US servings, from a single finger to the party size bar
| Serving | Weight | Calories |
|---|---|---|
| 1 miniature bar | 10 g | 52 kcal |
| 1 oz | 28 g | 145 kcal |
| 1 bar, 1.5 oz, four fingers | 42 g | 218 kcal |
| 1 bar, king size, 2.8 oz | 78 g | 404 kcal |
| 1 bar, party size, 3.375 oz | 96 g | 497 kcal |
| Per 100 g | 100 g | 518 kcal |
The miniature, the 1.5 oz bar, the king size and the party size are all USDA household measures on record 167992. The 1 oz line is our own arithmetic from the USDA 100 g figure, not a USDA serving, and it is there because ounces are how candy gets weighed at home.
Snapping off one finger is the move most people make, and it is the number USDA never lists. Four fingers make 218 calories, so one finger is roughly 55 — again our arithmetic, not a published serving. That puts a single finger within a few calories of a whole 10 g miniature bar at 52. If you keep a bowl of miniatures on the desk, four of them are effectively a full bar.
Sizes are where this candy quietly doubles. The king size at 78 g is 404 calories, and the party size at 96 g is 497 — nearly the calories of a real lunch, from something sold as an impulse buy. Both wrappers look like one unit and get eaten like one unit.
Big Kat, Minis and the flavor spin-offs
| Version | Per 100 g | Typical piece | Calories |
|---|---|---|---|
| Kit Kat Big Kat bar | 520 kcal | 1 bar, 1.94 oz (55 g) | 286 kcal |
| Kit Kat Big Kat, king size | 520 kcal | 1 bar, 2.8 oz (79 g) | 411 kcal |
| Kit Kat Minis | 500 kcal | 6 pieces (28 g) | 140 kcal |
| Kit Kat Raspberry Creme Miniatures | 500 kcal | 4 pieces (34 g) | 170 kcal |
| Kit Kat Chocolate Hazelnut Thins | 500 kcal | 5 pieces (30 g) | 150 kcal |
| Kit Kat Matcha (Japan import) | 584 kcal | 1 piece (11.3 g) | 66 kcal |
Big Kat is the interesting one. Per 100 g it is 520 calories against 518 for the classic bar, a difference you could ignore. The composition is not the same, though: a thicker chocolate coat over a single wafer stack pushes sugars to 53.96 g and fat to 27.84 g per 100 g. A 55 g Big Kat is 286 calories with about 9.9 g of saturated fat, half a day's worth.
The smaller formats behave the way you would hope. Six Minis at 28 g are 140 calories, five Hazelnut Thins 150, four Raspberry Creme Miniatures 170. Those come from Hershey labels in USDA's Branded database, so they carry the rounded 500 per 100 g rather than a lab number.
The imported matcha bar is the outlier at 584 calories per 100 g — white chocolate is denser than milk chocolate — but a single piece weighs 11.3 g, so it lands at 66 calories. Density and portion pull in opposite directions here, which is exactly why per-100-g comparisons alone mislead people in the candy aisle.
Saturated fat is the row that moves
Calories are the headline, saturated fat is the story. One 42 g bar is 11% of a 2,000-calorie day but 38% of the FDA Daily Value for saturated fat, which is 20 g. On the label's own scale, 20% or more of a Daily Value counts as high, so a single Kit Kat clears that bar comfortably before you touch the rest of the day's food.
Scale it up and it gets sharper. The king size delivers about 14 g of saturated fat, 70% of the Daily Value. The party size runs to roughly 17 g, or 86%. Meanwhile sodium stays trivial at 23 mg a bar, about 1% of the Daily Value, and fiber and protein are close to rounding error.
The Dietary Guidelines for Americans treat candy as one of the main places added sugars enter the diet, alongside soda and desserts, and MyPlate files it under foods with little else to give. Nothing here is a reason to never eat a Kit Kat. It is a reason to log it as what it is: a fixed-cost 218-calorie snack, best bought in the size you intend to eat.
How does a Kit Kat compare?
| Candy bar | Per 100 g | US serving | Calories |
|---|---|---|---|
| Kit Kat Wafer Bar | 518 kcal | 1 bar, 1.5 oz (42 g) | 218 kcal |
| NESTLE Chunky Bar | 519 kcal | 1 bar, 1.4 oz (40 g) | 208 kcal |
| DOVE Dark Chocolate | 520 kcal | 1 bar, 1.3 oz (37 g) | 192 kcal |
| COCOAVIA Crispy Chocolate Bar | 517 kcal | 1 bar, 0.7 oz (20 g) | 103 kcal |
Our take: these four bars sit within 3 calories of each other per 100 g, which tells you the recipe barely matters — chocolate plus sugar plus a crisp filling lands at roughly 520 whatever the wrapper says. What separates them is how much bar you get. Kit Kat is the heaviest of the four at 42 g and therefore the most calories per purchase, while the 20 g CocoaVia bar is half the snack for half the count. If you are picking for weight loss, choose by gram weight on the wrapper, not by the ingredient list. If you want the bar to actually feel like something, the 42 g Kit Kat gives you four snappable pieces to stretch out, which is a genuine advantage over a single slab you finish in three bites.
Most popular kit kat brands in the United States
Ranked by how widely each product appears among foods sold in the United States, from the BodyPal food database of over 3.3 million products. Calories are the figures printed on each Nutrition Facts label, checked against USDA FoodData Central.
| Product | Calories (per 100 g) |
|---|---|
| Kit Kat Milk Chocolate | 500 cal |
| Kit Kat Crispy Wafers in Milk Chocolate | 500 cal |
| Kit Kat Raspberry Creme Miniatures | 500 cal |
| Kit Kat Chocolate Hazelnut Thins | 500 cal |
| Kit Kat Minis | 500 cal |
| Nestle Kit Kat Matcha | 584 cal |
Brand popularity: BodyPal food database. Nutrition: manufacturer labels / USDA FoodData Central.
Kit Kat FAQs
How many calories are in a Kit Kat bar?
A standard 1.5 oz (42 g) four-finger bar has 218 calories, based on USDA's SR Legacy record at 518 calories per 100 g. That bar also carries 10.9 g of fat, 7.5 g of it saturated, and 20.4 g of total sugars. King size and Big Kat versions run higher.
How many calories in one Kit Kat finger?
About 55 calories per finger. A four-finger bar is 218 calories, so dividing by four gives 54.5 — our own arithmetic from the USDA bar figure, not a USDA serving. That makes a single finger almost identical to one 10 g miniature bar, which USDA lists at 52 calories.
How many calories in a king size Kit Kat?
A 2.8 oz (78 g) king size Kit Kat is 404 calories, close to double the standard bar. It brings about 14 g of saturated fat, which is 70% of the Daily Value in one wrapper. Splitting it across two sittings is the easy fix if you log calories.
How much sugar is in a Kit Kat?
A 42 g bar has 20.4 g of total sugars, from 48.68 g per 100 g. The USDA SR Legacy record does not publish added sugars for this candy, so no added-sugar Daily Value can be shown here. A king size bar takes total sugars to about 38 g.
How many calories in Kit Kat Minis?
Six Kit Kat Minis weigh 28 g and come to 140 calories on the Hershey label in USDA's Branded database. That is 500 calories per 100 g, a rounded label figure rather than a lab value. Six Minis land 78 calories under one standard four-finger bar.
Is Kit Kat high in saturated fat?
Yes by label standards: one 42 g bar has 7.5 g of saturated fat, 38% of the FDA Daily Value of 20 g, while its calories are only 11% of a 2,000-calorie day. Anything at 20% of a Daily Value or more counts as high on the label.
How many calories in a Kit Kat Big Kat?
A 1.94 oz (55 g) Big Kat bar is 286 calories, using USDA's separate record at 520 calories per 100 g. The king size Big Kat, 2.8 oz or 79 g, comes to 411. Big Kat carries a thicker chocolate coat over one wafer stack, so fat and sugar per 100 g both rise.
Does Kit Kat have protein?
A 42 g bar has 2.7 g of protein, 5% of the Daily Value, which is trivial next to its 27.1 g of carbohydrate. Per 100 g the bar holds 6.51 g, most of it from milk chocolate. Treat Kit Kat as a sweet, not as a protein snack.
Similar foods
- Falafel Ball — 87 cal per ball
- S'more — 210 cal per s'more
- Chia Seeds — 138 cal per oz
- Pistachios — 332 cal per cup in shell
- Prime Rib — 340 cal for 3 oz slice
- Torta — 215 cal per serving
Count it without the math
Point the camera at the wrapper and BodyPal counts the bar for you, king size and all.
