Carbs in Kidney Beans: The Quick Answer
Kidney Beans contains 16.4g of net carbs per 100g, calculated by subtracting 6.4g of dietary fiber from 22.8g of total carbohydrates. With 127 calories, 8.7g protein, and 0.5g fat per 100g, it is classified as Moderate Carbs for carbohydrate content.
Net carbs — not total carbs — are what matter for keto and low-carb diets. Only net carbs raise blood sugar and affect insulin, which is why tracking them accurately is key to staying in ketosis. Use our Keto Macro Calculator to find your daily net carb limit based on your body and goals.
Is Kidney Beans Keto Friendly?
Kidney Beans has 16.4g net carbs per 100g, which is moderate. It can be included occasionally on keto if portions are controlled and the rest of your day's carbs are kept very low.
Best Low-Carb Swaps for Kidney Beans
Kidney Beans is high in carbs. If you're eating low-carb or keto, these swaps deliver the same satisfaction with a fraction of the net carbs.
| Instead of | Try this | Why it helps |
|---|---|---|
| Beans or lentils (~12-20g net carbs per 100g) | Black soybeans (~1g net carbs) | Looks and cooks exactly like black beans — the keto bean |
| Legumes in a recipe | Extra ground meat + low-carb veg (zucchini, mushroom) | Same filling, hearty texture without the bean carbs |
How Net Carbs Are Calculated
Net carbs are calculated by subtracting dietary fiber (and sugar alcohols, if present) from total carbohydrates: Net Carbs = Total Carbs − Fiber. For Kidney Beans: 22.8g − 6.4g = 16.4g net carbs per 100g.
Dietary fiber is subtracted because it passes through the digestive system without being absorbed as glucose. It does not raise blood sugar or trigger an insulin response, making it irrelevant for carb counting on keto and low-carb diets.