
Cheese is a delicious and nutritious food, but how many calories are in that small slice you're eating? The calorie count varies depending on the type of cheese and its fat content, as well as how it's processed and how old it is. Full-fat dairy is high in calories, which can be a concern for those watching their weight. While the serving size on the package is an estimate, it's the best guide for understanding your calorie intake. If you're concerned about accuracy, you can weigh your food and calculate the calories per gram.
| Characteristics | Values |
|---|---|
| Nutritional Value | Dependent on fat content of milk used, processing, and age |
| Serving Size | Varies in reality compared to package suggestion |
| Calorie Count Estimation | Divide package calories by number of slices |
| Weight Variation | Bread as an example; weight changes as it dries out |
| Company Measurements | Based on entire product, then divided by estimated servings |
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What You'll Learn

Calories depend on the type of cheese
Calories in a slice of cheese depend on the type of cheese and the size of the slice. The calorie count of cheese is influenced by the fat content of the milk used, the processing methods employed, and the age of the cheese. Full-fat dairy products, for instance, tend to be high in calories, which can be detrimental to weight management goals. Additionally, highly processed cheeses often contain more artificial ingredients.
Cream cheese, a highly processed variety, derives its nutritional value and calorie count primarily from the fat content of the milk used. As a result, opting for natural varieties of cream cheese is generally recommended. When it comes to pre-packaged cheese, the number of calories per slice can vary significantly from the labelled serving size, as companies typically determine calories based on the entire product, which is then divided by estimated servings.
To accurately determine the calories in a slice of cheese, it is advisable to refer to the total calories listed for the entire package and divide that by the number of slices. This method provides a more precise estimate of the calorie content per slice. However, it is worth noting that nutrition labels may not always be entirely accurate, and weighing food is considered a more reliable approach to tracking macros and calories.
The moisture content of cheese can also impact its calorie count. For example, freshly baked bread can initially appear to have double the suggested serving size on the scale due to its moisture content, but as it dries out over time, its weight decreases, potentially dropping below the suggested serving size. Similar variations in moisture content can occur in cheese, affecting the accuracy of calorie estimations based on weight alone.
In summary, the calories in a small slice of cheese can vary depending on the specific type of cheese, the fat content of the milk used, the processing methods, and the age of the cheese. To make informed choices, it is beneficial to consider the nutritional information provided and opt for natural varieties with lower fat content when possible. Additionally, accurately determining the calories in a slice of cheese involves considering factors beyond the labelled serving size, such as the total calories in the package and the number of slices.
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Calories depend on the fat content of the milk used
Cheese is a great source of calcium, protein, vitamins A and B12, and other nutrients. However, it is also high in fat, including saturated fat, and calories. The nutritional value and calorie count of cheese depend on the fat content of the milk used, how it's processed, and its age.
Full-fat dairy is high in calories, which can negatively impact weight loss plans. The fat content of the milk used to make cheese determines its calorie count. For example, cream cheese's nutritional value and calorie count are highly dependent on the fat content of the milk used. Since it tends to be highly processed, opting for natural varieties is recommended.
Mozzarella, a soft white cheese, is lower in sodium and calories than most other cheeses. Goat cheese, or chevre, is a soft cheese with a tangy flavour that is also lower in lactose and contains different proteins, making it easier to digest than cow's milk cheese. Feta, a Greek white cheese, is also typically lower in calories than other cheeses, and a 2019 study found that eating it may help reduce body fat. Cottage cheese is another low-calorie option, and its high protein content can aid in weight loss by increasing feelings of fullness and reducing overall calorie intake.
On the other hand, harder cheeses tend to have higher calorie counts than softer cheeses. They also tend to have higher sodium content, as they require more salt in the aging process. If sodium is a concern, Swiss cheese is a good option, as it only contains 53 milligrams per ounce, compared to feta's 323 milligrams.
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Calories depend on the processing method
The calorie count of cheese depends on several factors, one of which is the processing method. Cheese is produced using either pasteurized or raw milk, which is then heated with active cultures and a coagulant. The leftover whey curdles are drained, and the product is left to age. The longer a cheese is aged, the lower its moisture content and the higher its calorie count. Therefore, hard and semi-hard cheeses, which are aged longer, tend to have higher calories than soft cheeses.
The processing method also influences the type of milk used, which in turn affects the calorie count. For instance, feta is made from sheep's or goat's milk, while mozzarella is usually made from Italian buffalo or cow's milk. The fat content of the milk used plays a significant role in determining the nutritional value and calorie count of the cheese. Full-fat dairy is high in calories, which can negatively impact weight loss plans.
Additionally, the processing method can determine whether a cheese is natural or processed. Natural cheeses, also known as fresh, young, or soft cheeses, tend to be higher in moisture and lower in solids than processed or aged cheeses. Processed cheeses, which are blends of cheeses mixed with emulsifying salt and other ingredients, often contain more artificial ingredients and can be higher in sodium and saturated fat.
The serving size of cheese is another factor that influences calorie intake. The recommended serving size for natural cheese is 1½ ounces, while for processed cheese, it is 2 ounces. However, it is important to note that the serving sizes on packages may not always reflect the actual slice size, and the best way to determine the calories per slice is to divide the total calories in the package by the number of slices.
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Calories depend on the age of the cheese
The calorie count of cheese is highly dependent on the fat content of the milk used, how it is processed, and its age. In general, old cheese contains slightly more fat and salt than young cheese. This is because the longer maturation period of old cheese reduces its moisture content and intensifies its flavour. The higher fat content does not necessarily mean that old cheese is unhealthier, as fats are an important source of energy and can contribute to a balanced diet, provided one does not consume too much of it.
During the ageing process, enzymes in the cheese break down proteins and fats, leading to a reduction in protein content and an increase in fat content. For example, according to a study published in the Journal of Dairy Science, the fat content of Parmigiano-Reggiano cheese increases from 27.5% to 31.5% during 24 months of ageing, while the protein content decreases from 31.6% to 28.2%. Similarly, a study published in the Journal of Food Science found that the fat content of Cheddar cheese increases from 32.3% to 34.3% after 12 months of ageing, while the protein content decreases from 25.1% to 23.6%.
While the exact number of calories in a small slice of cheese will depend on the type of cheese and its fat content, a serving of aged cheese weighing about 30 grams contains, on average, 120 calories.
It is worth noting that the serving size on the package is typically the best estimate of the calorie count, although it is not a perfect science. The total calories in a package of cheese are usually calculated based on the entire calorie content of the ingredients used to make the full block of cheese, which is then divided by the estimated number of servings. However, the actual serving size of a slice of cheese may vary, and the exact calorie count can only be determined using a direct calorimeter, which most companies do not have.
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Calorie calculation methods
The calorie content of cheese depends on several factors, including the type of milk used, its fat content, the level of processing, and the age of the cheese. Typically, full-fat dairy and highly processed cheeses have a higher calorie count.
When determining the calorie content of cheese, companies often calculate the total calories of the ingredients used to make the entire package of cheese. This value is then divided by the estimated number of servings. However, it is challenging to determine the exact calorie content per serving without specialised equipment like a calorimeter. As a result, nutrition labels may not always be entirely accurate.
To estimate the calories in a small slice of cheese, one method is to refer to the package's serving size and calculate the calories per slice. If the package contains ten slices, divide the total calories per package by ten to find the calories per slice. This approach assumes that each slice has an equal thickness and size.
Another approach is to weigh the cheese and calculate the calories per gram based on the total weight and total calories of the package. This method accounts for variations in slice thickness and size. By weighing the slice and multiplying it by the calories per gram, you can estimate the calories in your slice of cheese more accurately.
It is worth noting that the type of cheese also plays a role in calorie content. Hard and semi-hard cheeses, which have been aged longer and contain less moisture, tend to have higher calories than softer cheeses. Additionally, natural cheeses with less processing, such as Swiss, Colby, mozzarella, and ricotta, are recommended over highly processed options.
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Frequently asked questions
The number of calories in a small slice of cheese depends on the type of cheese. For example, the calorie count of cream cheese depends on the fat content of the milk used. Generally, full-fat dairy is high in calories.
The most accurate way to calculate the calories in a slice of cheese is to divide the total calories in the package by the number of slices.
Companies usually measure calories based on the entire product, and then divide this by the estimated number of servings. However, it is nearly impossible to get an exact calorie count without a direct calorimeter, which most companies do not have.
The best way to estimate the calories in a slice of cheese is to refer to the serving size on the package, as this will provide the most accurate estimate of the calorie and macro content.

























