Food portion and carb calculator
Compare two foods at the same weight, or work out how much fits the carb budget you set for a portion.
Compare portions
Blueberries
12.1g net carbs in 100g
14.5g total carbs · 2.4g fiber · 0.7g protein · 57 kcal
About 41g uses your 5g net-carb budget.
Blueberries, raw
USDA source · Food guideStrawberries
5.7g net carbs in 100g
7.7g total carbs · 2g fiber · 0.7g protein · 32 kcal
About 87g uses your 5g net-carb budget.
Strawberries, raw
USDA source · Food guideEqual weights make comparisons fair. Values are estimates from USDA entries; preparation and brand can change nutrition. Raw and cooked weights are not interchangeable.
Compare equivalent portions
A cup of one food does not weigh the same as a cup of another. Comparing equal grams separates food choice from serving size. We show total carbs, fiber, protein and calories alongside net carbs so you can make a fuller comparison.
Check the preparation
Values come from named USDA FoodData Central entries. Some foods are raw and others are ready to eat. Cooking changes weight and can change the nutrients retained, so check the description on each result.
Explore the food nutrition directory or use the label calculator for packaged products. The meal planner combines food portions into meals and a grocery list.