Keto food carb lookup
Pick a food, then set the portion you actually ate. You get net carbs for that portion, measured against USDA composition data rather than a guessed serving size.
52 foods · net carbs shown per 100 g
Vegetables
Avocado
Raw, all varieties
1 common portion (1/2 medium) is about 100 g.
Net carbs in this portion
100 g of avocado · 8.5 g carbs · 6.7 g fiber
1.8 g net carbs per 100 g × 100 g ÷ 100 = 1.8 g net carbs
Want a lower-carb option?
Compare avocado against the other food records at the same weight, and see how much you would need for the same carbs.
See swaps for avocadoFigures come from USDA FoodData Central per 100 g and are scaled to your portion. Brand, cut, and cooking method all shift the real number.
Where these numbers come from
Traced to a real source
Every record is a USDA FoodData Central figure per 100 g — carbohydrate and fiber together, not a number pulled from a blog.
Fiber subtracted once
USDA carbohydrate includes fiber, so net carbs are carbohydrate minus fiber. We never subtract it twice, and we never guess at sugar alcohols.
Scaled, not rounded away
Your portion drives the result. Enter 63 g or 2.5 portions and the maths follows, instead of snapping you to a tidy serving size.
Got a label instead?
Branded products differ from these averages — and some labels list fiber already excluded. Enter the label figures directly in the net carb calculator and it will handle both conventions, then print the result.
Open the net carb calculatorFood carb questions
The details that decide whether a lookup is useful or misleading.
Both. Each food is listed with net carbs per 100 g, because that is how the USDA publishes it. The panel then scales that figure to whatever grams or common portions you enter, so you see per-portion numbers rather than a single fixed serving.
Net carbs per 100 g is a fixed property of the food. The total you eat scales with the amount, so 50 g of a 2 g per 100 g food gives 1 g, while 200 g gives 4 g. Nothing about the food changed — only how much of it you are eating.
USDA records are averages across samples. Brands, cuts of meat, ripeness, and cooking method all move the real figure. When you have a label in front of you, the label wins — enter it in the net carb calculator instead.
Yes, once. USDA carbohydrate figures include fiber, so net carbs = carbohydrate − fiber. Sugar alcohols and allulose are not accounted for in these records, since they only appear on branded labels.
Oils, butter, meat, fish, and eggs sit at or near zero net carbs. Leafy greens, avocado, and berries stay low per typical portion, while oats, banana, and cooked grains are the highest records in this set.
No. These are general food composition figures, not a medical plan, and nothing here is suitable for calculating insulin or medication doses. Speak to a clinician for diabetes management or any prescribed diet.
