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Golisano Children's Hospital / Endocrinology / Estimating Carbohydrates

Managing Diabetes: Estimating Carbohydrates

Sometimes foods do not have labels to let us know the amount of carbohydrates (carbs) they contain. Following are general guidelines for estimating the amount of carbs contained in many of these foods.

FoodServing SizeEstimated Carbs
Bagels, fresh160 g.
Bagels, frozen130 g.
Beans, dry (peas, kidney, navy)1/2 cup cooked15 g.
Bread1 slice or 1 ounce15 g.
Candy bar1 "fun size"10–20 g.
Casseroles - noodles, rice1 cup30 g.
Chips - potato or corn15 small size chips15 g.
Coffee drinks, hot chocolate8 oz.15–25 g.
Corn, peas, potatoes1/2 cup15 g.
French fries15 thin or small crinkle cut15 g.
Fruit, canned - lite or no sugar added syrup1/2 cup15 g.
Fruit, freshtennis ball size15 g.
Ice cream1/2 cup15 g.
Juice or soda1/2 cup15 g.
Meat, chicken or fish, breaded6 nuggets or 1 patty15 g.
Muffins, bakery1 large60–80 g.
Muffins, homemade1 small15–30 g.
Pasta1/2 cup (1/3 cup if tiny pasta)15 g.
Pizza1 medium slice35 g.
Soup - noodle, tomato or cream1 cup15 g.
Soup - pea1/2 cup15 g.
Subs1 6-inch45 g (15g/2")
Syrup, jam, jelly1 Tbsp.15 g.

For most carbohydrate foods, 1/2 cup = 15 grams carbs, with the following exceptions:

  • Milk: 1 cup = 15 g.
  • Rice: 1/3 cup = 15 g.

Use blood glucose testing to help confirm how these estimates work for you.