Tortilla Calories & Nutrition Calculator

The calorie gap between corn and flour tortillas is larger than most people assume. A standard 6-inch corn tortilla (24g) contains 52 calories, while a comparable 6-inch flour tortilla (30g) delivers 94 calories — that's an 81% increase, mostly driven by added fat and slightly higher carbohydrate density ^[1]. Scale that up to a burrito-size 10-inch flour tortilla (70g) and you're looking at 218 calories from the wrap alone, before any filling enters the picture.

Corn tortillas derive roughly 79% of their energy from carbohydrates, 11% from fat, and 10% from protein. Flour tortillas shift that ratio: 66% carbs, 23% fat, 11% protein ^[1]. The fat difference is the key driver — flour tortilla dough typically includes vegetable shortening or oil, adding 7.75g of fat per 100g versus just 2.85g in corn tortillas.

For context, three corn tortillas for a taco meal total 156 calories, while two 8-inch flour tortillas for burritos approach 288 calories — nearly double — without accounting for fillings. If you're logging meals and aiming for calorie awareness, this distinction matters on a daily basis.

Traditional corn tortillas aren't made from ground raw corn — they're made from nixtamalized maize, a 3,500-year-old process in which dried corn kernels are soaked and cooked in an alkaline lime (calcium hydroxide) solution ^[3]. This fundamentally transforms the grain's nutritional profile in ways that simple milling cannot.

Nixtamalization increases bioavailable niacin (vitamin B3) by liberating it from its bound form (niacyltin), which the human body otherwise cannot absorb. Historically, populations that adopted maize without this process experienced pellagra — a niacin deficiency. The process also boosts calcium content significantly: nixtamalized corn tortillas contain roughly 135mg calcium per 100g, compared to approximately 7mg in untreated maize flour ^[2]. That single tortilla can contribute 3–4% of daily calcium needs.

Research by Acosta-Estrada et al. (2023) at Tecnológico de Monterrey found that tortillas made from dry masa flour (nixtamalized flour) contained 11× more thiamine and 2.7× more niacin than those made from non-fortified high-yield hybrids ^[2]. However, the process does reduce some nutrients — certain phenolic compounds and fibre can decrease during the alkaline soak, though the net nutritional trade-off remains strongly positive ^[7].

Fibre content is where tortilla types diverge most meaningfully for anyone tracking intake. Whole wheat tortillas lead at 7.1g fibre per 100g, followed by corn tortillas at 6.3g, and flour tortillas trailing at just 3.1g ^[1]. The practical implication: two corn tortillas provide roughly the same fibre as a medium apple.

Resistant starch — the portion of starch that resists digestion in the small intestine and functions similarly to fibre — adds another dimension. Research published in the *International Journal of Molecular Sciences* found that nixtamalized corn tortillas contain approximately 5g of resistant starch per 100g, which increases when tortillas are cooled after cooking (retrogradation) ^[5]. This means a corn tortilla eaten cold or reheated may have a slightly lower effective glycemic load than one eaten fresh off the griddle.

Low-carb specialty tortillas exploit this fibre principle aggressively, packing 22g of dietary fibre per 100g through added cellulose, oat fibre, or modified wheat starch — bringing net carbs down to roughly 16g per 100g. Whether this translates to meaningfully different satiety or glycemic responses compared to whole-grain alternatives is an active area of research.

Sodium is the most underappreciated nutritional difference between corn and flour tortillas. Flour tortillas contain 636mg sodium per 100g — that's 14 times more than the 45mg found in the same amount of corn tortilla ^[1]. A single burrito-size flour tortilla (70g) delivers 445mg sodium, which is nearly 20% of the recommended daily limit of 2,300mg, from the wrap alone.

This disparity exists because flour tortilla dough requires salt and baking powder (sodium bicarbonate) for elasticity and leavening, while traditional corn masa relies primarily on the alkaline lime from nixtamalization. For people monitoring overall sodium in their food logs, switching from two flour tortillas to corn tortillas at lunch could reduce meal sodium by 500–800mg — a significant shift.

Whole wheat tortillas fall in between at 486mg per 100g, still substantially higher than corn. If sodium awareness is a priority in your journaling, corn tortillas are the clear winner among commercially available options.

Standard corn tortillas provide 5.7g protein per 100g, flour tortillas offer 8.3g, and whole wheat tortillas lead with 9.6g ^[1]. However, raw protein numbers tell only part of the story. Maize protein is famously limited in lysine and tryptophan, two essential amino acids — which is why traditional diets pair tortillas with beans (rich in lysine) to create a complementary protein profile ^[5].

Quality Protein Maize (QPM) varieties, developed through breeding programs, address this limitation directly. QPM tortillas contain 3.4–6.0g lysine and 0.8–1.2g tryptophan per 100g of protein — roughly double the levels in standard corn ^[5]. Research by Mora-Avilés et al. (2007) demonstrated that QPM-bean blend tortillas showed significantly improved amino acid profiles compared to regular corn tortillas ^[4].

For practical logging purposes: if tortillas are your primary carbohydrate source, pairing them with [cooked beans](/tools/cooked-beans-nutrition-calculator) or [cowpeas](/tools/cowpea-nutrition-calculator) provides a more complete amino acid picture. Two corn tortillas (48g) plus ½ cup of black beans delivers roughly 12g of complementary protein.

Tortilla size is the single largest variable affecting calorie count, yet it's the most commonly overlooked factor when logging meals. Here's what each size actually delivers:

Corn tortillas: 1 small (6", 24g) = 52 kcal · 2 tacos (48g) = 105 kcal · 3 tacos (72g) = 157 kcal

Flour tortillas: 1 medium (6", 30g) = 94 kcal · 1 large (8", 46g) = 144 kcal · 1 burrito (10", 70g) = 218 kcal · 1 extra-large (12", 114g) = 356 kcal

Whole wheat: 1 medium (8", 45g) = 118 kcal

Fried/baked variants: 1 tostada shell (14g) = 64 kcal · 1 hard taco shell (13g) = 61 kcal · 1 oz tortilla chips (28g) = 137 kcal

The jump from a standard corn taco tortilla to a 12-inch flour burrito wrap represents nearly a 7× calorie increase — from 52 to 356 kcal. When restaurants describe portions as a 'wrap' or 'burrito,' the tortilla itself may account for 25–40% of total meal calories. For logging accuracy, identifying tortilla size matters more than identifying the filling in many cases.