Carbs in corn tortilla
Per 2 tortillas, 6-inch (48 g)
21g
Total carbs
3g
Fiber
18g
Net carbs
0g
Sugars
Values are typical for the stated serving, consistent with USDA FoodData Central; brands and preparations vary. GI reference: glucose = 100.
What corn tortilla actually does
Corn tortillas are one of the quieter wins in the carb world: two small ones carry just 21 g of carbs with a low GI around 46, thanks to the traditional lime treatment (nixtamalization) that changes the corn's starch structure. Compare that to a single large flour tortilla at 36 g and the taco-versus-burrito math gets obvious fast. Street-taco portions keep things naturally contained — the counting problem only shows up when the tortillas keep coming or when chips enter the picture, since a basket of tortilla chips is the same corn but fried, salted, and effectively bottomless.
Fairly gentle — a moderate rise around 45–60 minutes for a typical two-taco serving.
Worth trying
Tacos are naturally well-built meals — protein and vegetables come standard. Count the tortillas as they land on the plate, not at the end, and treat the chip basket as its own separate decision.
Common questions
Are corn tortillas better than flour for diabetics?
Per serving, usually — two corn tortillas are about 21 g of carbs versus 36 g for one large flour tortilla, with more fiber per gram. Corn's GI is modest too. The bigger factor is what wraps around them: a burrito-sized flour tortilla stuffed with rice can triple the carbs of three street tacos.
How many carbs are in a corn tortilla?
A standard 6-inch corn tortilla runs about 10–11 g of carbs with 1–2 g of fiber. That makes them easy to count as roughly 10 per tortilla — one of the simpler mental-math foods at a restaurant.
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 corn tortilla 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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