Carbs & Net Carbs in Food

Step-by-Step Guide

Using the calculator takes only a few seconds:

1. Select the cheese type from the dropdown — choose "Custom cheese" if the cheese isn't listed and enter the value from the nutrition label.
2. Enter the amount you plan to eat. You can type grams or ounces, or tap a quick-fill preset such as 28 g (1 oz) or 100 g.
3. Click Calculate carbs. The result shows total carbs, carbs per ounce, and the percentage of a 275 g daily carb budget (based on a 2,000-calorie reference diet).
4. Use the Reset button to clear the fields and start a new calculation.

Carb Values by Cheese Type

The values below are typical figures compiled from USDA FoodData Central. Actual values can vary by brand, milk fat, aging time, and added ingredients, so check the label when precision matters.

Notice that aged hard cheeses tend to be lower in carbs because more lactose is drained or fermented away during cheesemaking. Fresh, soft cheeses such as ricotta and cottage cheese retain more whey and therefore more lactose.

Formula Explained

The calculator uses a simple proportion based on the cheese's carbohydrate density:

• If you enter grams: total carbs = carbs per 100 g × weight (g) ÷ 100
• If you enter ounces: first convert to grams with weight (g) = weight (oz) × 28.3495, then apply the same formula.

For example, cheddar at 1.3 g carbs per 100 g means each gram of cheese contributes 0.013 g of carbs. A 40 g portion therefore contains 0.52 g. Most of this carbohydrate is lactose — the natural milk sugar that remains after cheesemaking — plus trace amounts of glycoproteins and other milk solids.

Worked Examples

Common Mistakes to Avoid

• Trusting "0 g" on labels. A cheddar label may round 1.3 g per 100 g down to 0 g per serving because the serving has less than 0.5 g. Over several servings, the rounding can hide meaningful carbs, especially for processed or fresh cheeses.
• Ignoring added ingredients. Flavored cheeses, smoked cheese with honey, cheese spreads, and "bacon cheddar" often include sugar, starch, or flour that increases the carb count.
• Volume vs weight. Measuring shredded or crumbled cheese in cups is unreliable. Use a kitchen scale for accurate macro tracking.
• Assuming all cheese is identical. Cream cheese and ricotta have roughly 4–6 times the carbs of aged cheddar. If you swap cheddar for ricotta in a recipe, your carb count changes.

For a different carb comparison, see the granola carbs calculator — granola is on the opposite end of the carbohydrate spectrum.

Frequently Asked Questions

1. Is cheese keto-friendly? Most aged hard cheeses are keto-friendly because a 30 g serving provides under 1 g of carbs. Softer cheeses, sweetened cream cheese spreads, and processed cheese products need more careful tracking.
2. Why does my cheese have more carbs than the list? There are three common reasons: the brand added milk solids, starch, or sugar; the label reports a different moisture content; or the "cheese" is actually a cheese product rather than real cheese.
3. Do lactose and galactose count as carbs? Yes. Total carbohydrate includes all sugars, including lactose and galactose, plus any added starch. This calculator reports total carbs, not net carbs.
4. Should I subtract fiber to get net carbs? Most natural cheeses contain no fiber, so net carbs are essentially the same as total carbs. If a cheese product label lists fiber (usually from added ingredients), you can subtract it if you track net carbs.
5. Can I use this for cheese sauces? Only if you calculate the plain cheese portion separately. A sauce made with flour, milk, or sweetened additives will have additional carbs beyond the cheese itself.