How many carbs are in a taco?
One original-style hard-shell beef taco (69g) has about 14g of carbohydrate and 11g of net carbs. Two tacos at a sitting pushes that to roughly 27g of carbs, so serving count matters more than the per-taco number.
Carbs by portion
| Portion | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 1 taco (69g) | 13.7g | 2.7g | 11.0g |
| 100 grams | 19.9g | 3.9g | 15.9g |
Net carbs
One taco has about 11g of net carbs, which is total carbs (14g) minus fiber (3g). Most of that fiber comes from the corn shell. For mixed fast-food items, using total carbs is the more conservative choice because fiber estimates on restaurant dishes can run imprecise. See the net carbs guide for when the distinction matters.
Glycemic index of a taco
The glycemic index of a taco is about 54. The corn tortilla shell drives the glycemic response, but fat and protein from the beef and cheese slow gastric emptying, pulling the whole-meal response below what the shell alone would produce.
For diabetes
One taco is about 14g of carbs, which is workable, but most people eat two or three in a sitting, which lands at 27 to 42g. The shell is the main carb source. A hard corn shell carries fewer carbs than a soft flour tortilla of the same filling weight. Fat and protein from the beef and cheese slow the glucose rise compared with a carb-equivalent bread snack, but the total still needs to match your dosing plan. See the diabetes carb-counting guide for handling mixed-ingredient foods.
Keto and low carb
One taco has about 11g of net carbs, which fits within a 20 to 30g daily keto budget on its own. A second taco adds another 11g and puts you near or at the limit. Removing the shell and eating just the beef, cheese, and lettuce cuts carbs to under 2g per serving and is the standard keto workaround.
Good to know
The shell is the biggest carb variable in a taco. A standard hard corn shell (about 13g) contributes roughly 8g of carbs. A small soft flour tortilla (about 30g) adds 15 to 18g, more than doubling the shell carb count for the same filling. Street tacos use two small corn tortillas stacked together, which together weigh 40 to 50g and add about 18 to 22g of carbs before any fillings. Fish tacos often swap in a flour tortilla, so check before assuming they are lower in carbs.
Full nutrition (per 100g)
- Calories: 229.0 kcal
- Carbohydrate: 19.85g
- Fiber: 3.9g
- Sugars: 0.9g
- Protein: 8.86g
- Fat: 12.7g
Stop looking up carbs one food at a time
CarbZen reads the carbs off a photo of your whole plate in about 3 seconds, checked against USDA data. 7 days unlimited, then 30 scans a month, free.
Get the appFrequently asked questions
How many carbs are in a taco?
One hard-shell beef taco (69g) has about 14g of carbohydrate and 11g of net carbs.
How many carbs are in 2 tacos?
Two standard hard-shell beef tacos (138g total) have about 27g of carbohydrate and 22g of net carbs.
Are hard-shell tacos lower in carbs than soft tacos?
Yes. A hard corn shell (13g) adds about 8g of carbs. A small flour tortilla (30g) adds 15 to 18g. Same filling, noticeably different carb count from the shell alone.
Is a taco keto?
One taco at 11g of net carbs can fit a keto budget, but a second taco nearly fills the day's limit. Ditching the shell drops carbs to under 2g per taco.
How many carbs are in a taco shell?
A hard corn taco shell weighs about 13g and has roughly 8g of carbs. A soft flour tortilla (30g) has about 15 to 18g of carbs.
What is the glycemic index of a taco?
A beef taco has an estimated GI around 54, based on the corn shell. The fat and protein from beef and cheese slow the blood sugar response compared with the shell eaten alone.