Lentils are usually too high-carb for keto in normal portions. Cooked lentils are about ~12.2g net carbs per 100g, so a typical 1/2 cup serving can be around ~6–12g net carbs depending on how it’s measured. If you include lentils, keep servings small and build the rest of your meal around very low-carb foods.
YOUR PORTION
Scale the published reference values to your portion.
Per 100 g (as listed by source). USDA FoodData Central.
total carbohydrate - fiber. Each published value is multiplied by your portion divided by the reference amount. No extra fiber, sugar alcohol or allulose deductions are applied here.
Grams and milliliters are not interchangeable. Household measures require a food-specific conversion; check your scale or product label.
12.2gnet carbs in your portion
Lentils have fiber and protein, but the net carbs still add up quickly on keto.
Even 1/2 cup can be a big chunk of a strict keto day (20g net).
For soups and bowls, use lentils as an occasional measured add-in—or swap to low-carb veggies + protein.
Per 100 g (as listed by source)
Source: USDA FoodData Central reference record
Source fit: generic reference; variety, brand, or preparation may differ
Net-carb calculation: total carbohydrate - fiber
This USDA record is used as a generic nutrition reference; variety, brand, or preparation may differ.
Nutrition record reviewed 2026-07-09. Maintained by KetoLens Team.
| Serving | Net Carbs | Total Carbs | Calories | Notes |
|---|---|---|---|---|
| 2 Tbsp cooked (≈25g) | ~3.1g | ~5g | ~29 | A small add-in amount that’s easier to budget for keto. |
| 1/4 cup cooked (≈50g) | ~6.1g | ~10.1g | ~58 | Still meaningful carbs—plan your day around it if strict keto. |
| 1/2 cup cooked (≈100g) | ~12.2g | ~20.1g | ~116 | A common serving size that can be most of a strict keto budget. |
| 1 cup cooked (≈200g) | ~24.4g | ~40.3g | ~232 | Very likely to break ketosis for most people. |
Make a keto soup using broth, meat, and low-carb veggies; skip lentils or add only 1–2 Tbsp per bowl.
Use Cauliflower Rice as the base and add a small spoonful of lentils for texture if you’re tracking carbs.
Sprinkle a tablespoon of lentils into a big salad with olive oil and feta to keep the overall meal low-carb.
Usually not in normal servings. Cooked lentils are about 12.2g net carbs per 100g, so common portions can use up most of a strict keto daily carb limit.
If you’re doing flexible keto, you might be able to budget a small amount (like 1–2 Tbsp). Full servings are typically too high-carb for keto.
Sometimes. Compared with some beans, lentils can be a bit lower net carb per 100g, but they’re still usually too high for keto in normal portions.
Most lentil soups don’t, because portions are large and recipes often include other carbs. A keto version usually skips lentils or uses only a small spoonful per serving.
For soup/bowls, use low-carb veggies (cauliflower, zucchini, mushrooms) plus protein. For texture, try seeds or finely chopped mushrooms.