Net Carb Calculator

Calculate Net Carbs

Use the calculator below to determine the net carbs in your meal, ingredient, or serving. Enter the total carbs, dietary fiber, and sugar alcohol in grams for accurate results.

How to Calculate Net Carbs

Calculating net carbs is a simple process that involves subtracting the amount of dietary fiber and half of the sugar alcohols from the total carbohydrates in a food item or meal. This calculation is particularly important for individuals following low-carb diets or those who need to monitor their blood sugar levels. Here's a detailed explanation of how to calculate net carbs:

Net Carb Formula

The formula to calculate net carbs is as follows:

$$Net Carbs = Total Carbs - Dietary Fiber - \frac{Sugar Alcohol}{2}$$

Where:

  • $Total Carbs$ is the total amount of carbohydrates in grams
  • $Dietary Fiber$ is the amount of fiber in grams
  • $Sugar Alcohol$ is the amount of sugar alcohols in grams

Calculation Steps

  1. Determine the total carbohydrates in the food item or meal.
  2. Identify the amount of dietary fiber in grams.
  3. Determine the amount of sugar alcohols (if any) in grams.
  4. Subtract the dietary fiber and half of the sugar alcohol from the total carbohydrates.
  5. The result is the net carb content of the food item or meal.

Example Calculation

Let's calculate the net carbs in a serving of low-carb bread that contains 15 grams of total carbohydrates, 8 grams of dietary fiber, and 4 grams of sugar alcohols.

Using the formula:

$$\begin{align} Net Carbs &= 15 - 8 - \frac{4}{2} \\ &= 5 \text{ grams} \end{align}$$

Therefore, one serving of this low-carb bread contains 5 grams of net carbs.

Visual Representation

This doughnut chart illustrates the breakdown of total carbohydrates into net carbs, dietary fiber, and sugar alcohols for the example low-carb bread. The blue portion represents the net carbs, which are the carbohydrates that impact blood sugar levels and are absorbed by the body. The red portion represents the dietary fiber, and the yellow portion represents half of the sugar alcohols, both of which are subtracted from the total carbs to calculate the net carbs.