Carbs in lentils
Per 1 cup cooked (198 g)
40g
Total carbs
16g
Fiber
24g
Net carbs
4g
Sugars
Values are typical for the stated serving, consistent with USDA FoodData Central; brands and preparations vary. GI reference: glucose = 100.
What lentils actually does
Lentils are in the same elite slow-carb club as black beans, arguably with a better resume: 16 g of fiber and 18 g of protein per cooked cup wrapped around a low-GI starch that tests around 32. The glucose curve is a long, shallow hill — many people see barely half the peak they would get from the same carbs as bread. Lentils also carry a second-meal effect: eating them at lunch measurably improves the glucose response to the next meal, one of the better-documented tricks in the research. Red lentils cook faster and digest slightly quicker than green or brown, but all varieties stay firmly in slow territory.
Long and low — a gradual rise that often will not peak until well past an hour.
Worth trying
Lentil soup, dal, or a lentil salad makes a genuinely filling meal that behaves itself. Swapping lentils in for half the rice in a dish flattens the whole curve.
Common questions
Do lentils raise blood sugar?
Slowly and modestly — a cup carries about 24 g of net carbs, but the fiber, protein, and resistant starch stretch the rise into a long shallow slope rather than a spike. For the amount of food you get, they are about as gentle as carbs come.
Which lentils are best for blood sugar?
All of them test low-GI; green and brown hold their structure and digest a touch slower than split red lentils, which soften into puree. The differences are small compared to what they are replacing — any lentil swapped in for rice or bread is a win on the curve.
Related foods
Real quick — we’re not your doctor. Everything on this page is general information, not medical advice, and diabetes is deeply individual. CarbLens AI never recommends insulin doses. Use what you learn here to have smarter conversations with your care team.
See what lentils does to YOUR blood sugar.
Averages are averages. CarbLens AI logs your meal and shows the 3-hour curve your own body produced.
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